WiMOD iM881A
Datasheet
Document ID: 4100/40140/0109
IMST GmbH
Carl-Friedrich-Gauß-Str. 2-4
47475 KAMP-LINTFORT
GERMANY
Datasheet
WiMOD iM881A Datasheet
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page i
Document Information
File name
iM881A_Datasheet.docx
Created
2016-05-19
Total pages
25
Revision History
Version
Note
0.5
Created
1.0
Updated Figure 5-1, Figure 7-1 and Table 5-1, added reference to [3]
Aim of this Document
The aim of this document is to give a detailed product description including interfaces, features
and performance of the radio module iM881A.
Datasheet
WiMOD iM881A Introduction
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 2
Table of Contents
1. INTRODUCTION 4
1.1 Key Features 4
1.2 Applications 4
2. MODULE OVERVIEW 5
3. LORA MODULATION TECHNIQUE 7
4. ELECTRICAL CHARACTERISTICS 8
4.1 Absolute Maximum Ratings 8
4.2 Global Electrical Characteristics 9
4.3 Module Interface Characteristics 10
4.4 RF Characteristics 11
4.4.1 Applicable Frequency Bands and Sub-Bands 11
4.4.2 Transmitter RF Characteristics 12
5. MODULE PACKAGE 13
5.1 Pinout Description 13
5.2 Module Dimensions 15
5.3 Recommended Footprint 15
6. MODULE INTERFACE CHARACTERISTICS 16
6.1 Programming Interface 16
7. INTEGRATION GUIDE 17
7.1 Typical Application Schematic 17
7.2 PCB Design Recommendation 18
7.3 Recommended Soldering Conditions 19
8. ORDERING INFORMATION 20
9. APPENDIX 21
9.1 List of Abbreviations 21
9.2 List of Figures 22
9.3 List of Tables 22
9.4 References 22
10. REGULATORY COMPLIANCE INFORMATION 23
Datasheet
WiMOD iM881A Introduction
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 4
1. Introduction
The iM881A is a compact, low power, bidirectional radio module for the 868 MHz
frequency band using Semtech’s LoRaTM modulation technology. The module provides
ultra-long range spread spectrum communication and high interference immunity whilst
minimising current consumption. Using the iM881A in an application minimizes the need
for an expensive and time-consuming RF development. Fast time to market is possible with
this pre-qualified module.
The iM881A provides an optimized RF performance for the extreme temperature range. In
addition, the iM881A is optimized for battery driven application and is equipped with a
powerful STM32L051 controller.
Figure 1-1: Picture of iM881A
1.1 Key Features
1.2 Applications
- Compact module 20.0 x 25.0 x 3.3 mm
- LoRaTM modulation technology
- Sensitivity down to -138 dBm
- UART, SPI and I²C interface1
- Digital inputs and outputs
- Analog inputs
- Supply voltage range from 1.8 to 3.6 V
- RF interface matched to 50
- Output power level up to +15 dBm
- High link budget up to 153 dB
- Range up to 12000m (Line of Sight)
- STM32L051C8
- Pre-Certified according to EN 300 220
- Automated Meter Reading
- Wireless Networks
- Home-, Building-, Industrial automation
- Remote Control
- Wireless Sensors
- Telemetry
- Wireless Alarm and Security Systems
- …
Please visit our web site www.wireless-solutions.de for more information.
1
Default host controller interface is UART. SPI and I²C functionality available on request.
Datasheet
WiMOD iM881A Module Overview
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 5
2. Module Overview
The iM881A is an ultra-long range, high-performance, pre-certified module for wireless
communication. It operates in the license free 868 MHz SRD frequency band and includes
all necessary passive components for wireless communication as depicted in the following
figure.
Microcontroller
STM32L051C8
RF
Sx1272
IRQ
UART
SPI
I²C
GPIO
Analog
32 MHz
32. 768 kHz
VDD
1.8 to 3. 6 V
RF
50 Ω
Matching
Network
16 MHz
Figure 2-1: Block Diagram of Radio Module iM881A
Figure 2-2: Interconnection
Datasheet
WiMOD iM881A Module Overview
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 6
The iM881A uses Semtech’s patented LoRa modulation technique which combines spread
spectrum modulation and forward error correction techniques to increase the range and
robustness of radio communication links compared with traditional FSK or OOK based
modulation. Typically examples of iM881A receive performances are given in the following
table.
Signal Bandwidth/[kHz]
Spreading Factor
Sensitivity/[dBm]
125
7
-123
125
12
-138
250
7
-121
250
12
-135
500
7
-116
500
12
-130
Table 2-1: Typically Radio Performance of iM881A
This high sensitivity combined with the integrated +14 dBm power amplifier yields industry
leading link budget.
The module is solderable like a SMD component and can easily be mounted on a simple
carrier board with a minimum of required external connections. It is RoHS compliant and
pre-qualified in accordance to ETSI EN 300 220.
The wide range of capabilities provided by the iM881A can be tested by using the
WiMOD Demo Board (part of the WiMOD Starter Kit).
Datasheet
WiMOD iM881A LoRa Modulation Technique
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 7
3. LoRa Modulation Technique
The iM881A uses Semtech’s LoRa proprietary spread spectrum modulation technique. This
modulation, in contrast to conventional modulation techniques, permits an increase in link
budget and increased immunity to in-band interference. It achieves sensitivities 8 dB better
than FSK modulation.
LoRa also provides significant advantages in both blocking and selectivity, solving the
traditional design compromise between range, interference immunity and energy
consumption.
In LoRa mode the iM881A offers three bandwidth options of 125 kHz, 250 kHz, and
500 kHz with spreading factors ranging from 7 to 12.
The spread spectrum LoRa modulation is performed by representing each bit of payload
information by multiple chips of information. The rate at which the spread information is
sent is referred to as the symbol rate (Rs), the ratio between the nominal symbol rate and
chip rate is the spreading factor and represents the number of symbols sent per bit of
information. The range of parameters which can be configured are given in the following
tables.
Spreading Factor
Chips/Symbol
SNR/[dB]
7
128
-7.5
8
256
-10
9
512
-12.5
10
1024
-15
11
2048
-17.5
12
4096
-20
Table 3-1: Spreading Factors of Sx1272
Note that the spreading factor must be known in advance on both transmit and receive
sides of the radio link as different spreading factors are orthogonal to each other. Note
also the resulting signal to noise ratio (SNR) required at the receiver input. It is the
capability to receive signals with negative SNR that increases the sensitivity, so link budget
and range, of the LoRa receiver.
To further improve the robustness of the radio link iM881A provides cyclic error coding
with different coding rates. With using this coding scheme forward error detection and
correction can be applied.
Coding Rate
Cyclic Coding Rate
Overhead Ratio
1
4/5
1.25
2
4/6
1.5
3
4/7
1.75
4
4/8
2
Table 3-2: Coding Rate of iM881A
Datasheet
WiMOD iM881A Electrical Characteristics
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 8
4. Electrical Characteristics
In the following different electrical characteristics of the iM881A are listed. Furthermore
details and other parameter ranges are available on request.
4.1 Absolute Maximum Ratings
Parameter
Condition
Min
Typ.
Max
Unit
Supply Voltage (VDD)
-0.3
-
3.9
V
Storage Temperature
-40
-
+85
°C
Operating Temperature
-40
-
+85
°C
RF Input Power
+10
dBm
ESD (Human Body Model)
2000
V
ESD (Charge Device
Model)
500
V
Notes:
1) Unless otherwise noted, all voltages are with respect to GND
Table 4-1: Absolute Maximum Ratings
Note: Stress exceeding of one or more of the limiting values listed under
“Absolute Maximum Ratings” may cause permanent damage to the radio
module.
Datasheet
WiMOD iM881A Electrical Characteristics
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 9
4.2 Global Electrical Characteristics
T = 25°C, VDD = 3.0 V (typ.) if nothing else stated
Parameter
Condition
Min
Typ.
Max
Unit
Supply Voltage (VDD)
1.8
3.0
3.6
V
Current Consumption
Low Power Mode
RTC off
800
nA
RTC on
1.4
µA
Current Consumption
System IDLE
TRX sleep mode,
µC idle mode
4
mA
Current Consumption
RECEIVE LoRa
TRX receive mode,
µC sleep mode
11.2
mA
Current Consumption
TRANSMIT
TRX transmit mode,
µC sleep mode,
all µC units off,
max. RF power level
38
mA
MCU operation
frequency
32
MHz
32.768
kHz
Memory (Flash)
iM881A-M
64
kByte
Flash Memory
Endurance
Program memory
10k
Erase/
Write
Cycles
Data memory
300k
Memory (RAM)
iM881A-M
8
kByte
Memory (EEPROM)
iM881A-M
2
kByte
iM881A-M uses STM32L051C8 MCU
Table 4-2: General Characteristics
Datasheet
WiMOD iM881A Electrical Characteristics
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 10
4.3 Module Interface Characteristics
T = 25°C, VDD = 3 V (typ.) if nothing else stated
Parameter
Condition
Min
Typ.
Max
Unit
Digital output voltage
(high level)
1.8 V ≤ VDD ≤ 3.6 V,
|IIO|≤ 4 mA
VDD -0.45
V
Digital output voltage
(low level)
1.8 V ≤ VDD ≤ 3.6 V,
|IIO|≤ 4 mA
0.45
V
Digital input voltage
(high level)
0.7 VDD
VDD
V
Digital input voltage
(low level)
0.3 VDD
V
Reset Input (Pin 7)
(high level)
1.4
VDD
V
Reset Input (Pin 7)
(low level)
GND
0.8
V
Bootloader Input (Pin 26)
(high level)
1.4
VDD
V
Bootloader Input (Pin 26)
(low level)
0.14 VDD
V
UART baud rate
115.2
kbps
RF input power
-20
dBm
Notes:
1) Unless otherwise noted, all voltages are with respect to GND
Table 4-3: Module Interface Characteristics
Datasheet
WiMOD iM881A Electrical Characteristics
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 11
4.4 RF Characteristics
4.4.1 Applicable Frequency Bands and Sub-Bands
Following table depicts the applicable frequency bands within the 868 MHz band for
“Non-Specific Short Range Devices” specified in the ERC Recommendation 70-03, [2].
Band
Edge Frequencies
Field Power
Spectrum
Access
Band Width
g (Note1,2)
863 MHz
870 MHz
+14 dBm
0.1% or LBT+AFA
7 MHz
(Note2)
863 MHz
870 MHz
-4.5 dBm / 100 kHz
0.1% or LBT+AFA
7 MHz
(Note2)
865 MHz
870 MHz
-0.8 dBm / 100 kHz
0.1% or LBT+AFA
5 MHz
865 MHz
868 MHz
+14 dBm
1% or LBT+AFA
3 MHz
g1
868.0 MHz
868.6 MHz
+14 dBm
1% or LBT+AFA
600 kHz
g2
868.7 MHz
869.2 MHz
+14 dBm
0.1% or LBT+AFA
500 kHz
g3
869.4 MHz
869.65 MHz
+27 dBm
10% or LBT+AFA
250 kHz
g4
869.7 MHz
870 MHz
+14 dBm
1% or LBT+AFA
300 kHz
g4
869.7 MHz
870 MHz
+7 dBm
No requirement
300 kHz
Note1: Modulation bandwidth ≤ 300 kHz is allowed. Preferred channel spacing is ≤ 100 kHz.
Note2: Sub-bands for alarms are excluded (see ERC/REC 70-03 Annex 7).
Table 4-4: Applicable Frequency Bands for Non-Specific Short Range Devices
For further information about frequency and RF power setting please refer to [4].
Note: National laws and regulations, as well as their interpretation can vary with the
country. In case of uncertainty, it is recommended to contact either IMST’s accredited
Test Center or to consult the local authorities of the relevant countries.
Datasheet
WiMOD iM881A Electrical Characteristics
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 12
4.4.2 Transmitter RF Characteristics
The iM881A has an excellent transmitter performance as given by Table 4-5. For further
details, refer to Figure 4-1 which gives an overview of RF output power levels versus power
level settings and its current consumption with microcontroller in sleep mode.
T = 25°C, VDD = 3 V (typ.), 866.5 MHz if nothing else stated
Parameter
Condition
Min
Typ.
Max
Unit
Frequency Range
863
-
870
MHz
RF Output Power
868 MHz Band
13.0
dBm
Modulation Techniques
FSK, LoRaTM
TX Frequency Variation
vs. Temperature
-40 to +85°C
-
±10
-
kHz
TX Power Variation vs.
Temperature
-
±0.5
-
dB
Table 4-5: Transmitter RF Characteristics
Figure 4-1: RF output power level and current consumption versus power stages
from -1 to 14 @ room temperature and supply voltages from 1.8V to 3.6V
Datasheet
WiMOD iM881A Module Package
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 13
5. Module Package
In the following the iM881A module package is described. This description includes the
iM881A pinout as well as the modules dimensions. Furthermore a recommendation for a
suitable footprint is given, which should be used for further mounting on appropriate
carrier boards.
5.1 Pinout Description
Figure 5-1 depicts a description of the iM881A's pads on the bottom side. The figure
shows the module with its pinout in top view (right figure). A detailed description of the
individual pins can be found in Table 5-1: iM881A Pinout Table.
Figure 5-1: Description of iM881A module pins and top view
Datasheet
WiMOD iM881A Module Package
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 14
PIN
PIN
Name
PIN Type
MCU Pin
(number)
5 V
Tolerance
Description
1
GND
Supply
-
Ground connection
2
P1
D IN/OUT
PA14 (P37)
Yes
Digital IO / SWCLK
3
P2
D IN/OUT
PA13 (P34)
Yes
Digital IO / SWDIO
4
P3
D IN/OUT
PB11 (P22)
Yes
Digital IO
5
P4
D IN/OUT
PA8 (P29)
Yes
Digital IO
6
GND
Supply
-
Ground connection
7
nReset
D IN
NRST (P7)
Yes
8
P5
D IN/OUT
PA11 (P32)
Yes
Digital IO / USART1_CTS
9
P6
D IN/OUT
PA12 (P33)
Yes
Digital IO / USART1_RTS
10
P6a
D IN/OUT
PB9 (P46)
Yes
Digital IO
11
GND
Supply
-
Ground connection
12
P7
D IN/OUT
PB4 (P40)
Yes
Digital IO / SPI1_MISO
13
P8
D IN/OUT
PB5 (P41)
Yes
Digital IO / SPI1_MOSI
14
P9
D IN/OUT
PB3 (P39)
Yes
Digital IO / SPI1_SCK
15
P10
D IN/OUT
PA15 (P38)
Yes
Digital IO / SPI1_NSS
16
GND
Supply
-
Ground connection
17
VDD
Supply
-
Supply voltage
18
RxD
D IN/OUT
PA10 (P31)
Yes
Digital IO / USART1_RX
19
TxD
D IN/OUT
PA9 (P30)
Yes
Digital IO / USART1_TX
20
P11
D IN/OUT
PB8 (P45)
Yes
Digital IO
21
P12
D IN/OUT
PB6(P42)
Yes
Digital IO / I2C1_SCL
22
GND
Supply
-
Ground connection
23
P13
D IN/OUT
PB7 (P43)
Yes
Digital IO / I2C1_SDA
24
P14
D IN/OUT, A IN
PA0 (P10)
No
Digital IO / ADC_IN0
25
P15
D IN/OUT
PC13 (P2)
Yes
Digital IO / WKUP2
26
BOOT
D IN
BOOT0 (P44)
No
Bootloader Pin 0, internally
pulled-down by 47 k
27
GND
Supply
-
Ground connection
28
P16
D IN/OUT
PA1 (P11)
Yes
Digital IO / ADC_IN1
29
P17
D IN/OUT, A IN
PA3 (P13)
Yes
Digital IO / ADC_IN3
30
GND
Supply
-
Ground connection
31
RF
A IN/OUT
-
External 50 port for
monostatic antenna
connection
32
GND
Supply
-
Ground connection
Table 5-1: iM881A Pinout Table
Datasheet
WiMOD iM881A Module Package
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 15
5.2 Module Dimensions
The outer dimensions of the iM881A are given by Figure 5-2 and Figure 5-3. The height
of the module is 3.3mm.
Figure 5-2: Outer Dimensions of the iM881A (top view)
5.3 Recommended Footprint
According to Chapter 5.2, a recommendation for the footprint of the iM881A is given by
Figure 5-3.
Figure 5-3: Recommended footprint of the iM881A (top view)
Datasheet
WiMOD iM881A Module Interface Characteristics
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 16
6. Module Interface Characteristics
6.1 Programming Interface
For programming the module with special firmware versions, there are two types of
interfaces supported: A SWD-interface, which require a special programmer, as well as a
bootloader-interface, for updating the modules firmware via UART-interface. For more
details refer to [3].
Datasheet
WiMOD iM881A Integration Guide
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 17
7. Integration Guide
The iM881A provides 32 connectors as described in Chapter 5. For integrating the
iM881A into an environment, a typically circuit as given in Chapter 7.1 can be used.
While designing the PCB Layout, the recommendations of Chapter 7.2 should be applied,
as well as the recommendation for soldering in Chapter 7.3.
7.1 Typical Application Schematic
Figure 7-1: Typical Application Schematic for iM881A
Datasheet
WiMOD iM881A Integration Guide
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 18
7.2 PCB Design Recommendation
The Top Layer of the carrier board should be kept free of Tracks and Vias under the
iM881A because there are some test pads on the bottom side of the module which are not
covered by solder resist.
All GND pads of the module should be connected via low impedance path to GND.
The iM881A's RF interface is already matched to 50 . By using an adequate 50
antenna, no additional matching components are required
1
. For an ideal signal
transmission between the modules RF pad and the antenna, the transmission line should
be as short as possible and represent an impedance of 50 .
This impedance depends on frequency and PCB structure. It is recommended to use a
grounded coplanar waveguide (CPWG) structure to reduce effects of electromagnetic
fields. The impedance of transmission line for grounded CPWG is basically affected by
height H and material of the substrate, gap G between transmission line and ground on
the top layer, as well as width W and thickness T of the transmission lines (Figure 7-2).
er
GND
GND GNDRF
H
GG W
T
T
Figure 7-2: Structure of a grounded CPWG
1
In other case a special matching network is required
Note: Disregarding this recommendation can affect the RF performance
respective RF output power, sensitivity, and unwanted emissions.
Datasheet
WiMOD iM881A Integration Guide
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 19
Assuming a frequency of approx. 868 MHz, FR4 (er≈4.8) as substrate material, copper as
conductor material, G = 0.4 mm and T = 35 µm, the width of transmission line is given
by Table 7-1.
H [mm]
W [mm]
1.0
1.37
1.6
1.85
Table 7-1: Recommended width of transmission line for CPWG and 868 MHz
7.3 Recommended Soldering Conditions
An example of the temperature profile for the soldering process of the iM881A is depicted
in Figure 7-3 with the corresponding values as given by Table 7-2. The temperature values
should not exceed the limits.
Temperature
Time
tPH t1
t2
T2
T1
TPH
Figure 7-3: Soldering Profile
Phase
Pb-Free Conditions
Preheating
tPH = 120s
TPH = 160~180°C
Primary heat
t1 = 60s
T1 = 220°C
Peak
t2 = 10s (max)
T2 = 255°C
Table 7-2: Recommended Soldering Parameter for Temperature and Timing
Note: The quality of the soldering process depends on several parameters,
e.g. soldering paste, carrier board design, fabrication equipment,...
Datasheet
WiMOD iM881A Ordering Information
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 20
8. Ordering Information
Ordering Part Number
Description
Distributor
iM881A-M
Radio Module iM881A
64 KB Flash, 8 KB RAM, 2 KB
EEPROM, 16 MHz MCU
crystal
sales@imst.de
SK – iM881A
Starter Kit for the iM881A.
See Notes.
sales@imst.de
AB – iM881A
2x Adapter Board with
iM881A
sales@imst.de
Notes:
The Starter Kit contains two Demo Boards, two Adapter Boards with iM881A, two antennas, and a CD or
USB memory stick with documentation.
Table 8-1: Ordering Information
Datasheet
WiMOD iM881A Appendix
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 21
9. Appendix
9.1 List of Abbreviations
ADC Analog-to-Digital Converter
BER Bit Error Rate
BSC Basic Spacing between Centers
CPWG Coplanar Waveguide
CW Continuous Wave
GND Ground
GPIO General Purpose Input/Output
I²C Inter-Integrated Circuit
MCU Microcontroller Unit
PCB Printed Circuit Board
RAM Random Access Memory
RF Radio Frequency
SMBus System Management Bus
SMT Surface Mounted Technology
SPI Serial Peripheral Interface
TRX Transceiver
USB Universal Serial Bus
Datasheet
WiMOD iM881A Appendix
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 22
9.2 List of Figures
Figure 1-1: Picture of iM881A ....................................................................................... 4
Figure 2-1: Block Diagram of Radio Module iM881A .................................................... 5
Figure 2-2: Interconnection ........................................................................................... 5
Figure 4-1: RF output power level and current consumption versus power stages from -1
to 14 @ room temperature and supply voltages from 1.8V to 3.6V ......... 12
Figure 5-1: Description of iM881A module pins and top view ........................................ 13
Figure 5-2: Outer Dimensions of the iM881A (top view) ............................................... 15
Figure 5-3: Recommended footprint of the iM881A (top view) ...................................... 15
Figure 7-1: Typical Application Schematic for iM881A ................................................. 17
Figure 7-2: Structure of a grounded CPWG ................................................................. 18
Figure 7-3: Soldering Profile ....................................................................................... 19
9.3 List of Tables
Table 2-1: Typically Radio Performance of iM881A ........................................................ 6
Table 3-1: Spreading Factors of Sx1272 ....................................................................... 7
Table 3-2: Coding Rate of iM881A ............................................................................... 7
Table 4-1: Absolute Maximum Ratings........................................................................... 8
Table 4-2: General Characteristics ................................................................................ 9
Table 4-3: Module Interface Characteristics ................................................................. 10
Table 4-4: Applicable Frequency Bands for Non-Specific Short Range Devices .............. 11
Table 4-5: Transmitter RF Characteristics ..................................................................... 12
Table 5-1: iM881A Pinout Table ................................................................................. 14
Table 7-1: Recommended width of transmission line for CPWG and 868 MHz .............. 19
Table 7-2: Recommended Soldering Parameter for Temperature and Timing................. 19
Table 8-1: Ordering Information ................................................................................. 20
9.4 References
[1] Semtech Sx1272 Data Sheet from www.semtech.com
[2] REC Recommendation 70-03 “Relating to the use of Short Range Devices
(SRD)”, Tromsø 1997, CEPT ECC subsequent amendments 9 th October 2012
[3] see Application Note for firmware update (iM880B) on
www.wireless-solutions.de
Datasheet
WiMOD iM881A Regulatory Compliance Information
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 23
10. Regulatory Compliance Information
The use of radio frequencies is limited by national regulations. The radio module has been
designed to comply with the European Union’s R&TTE (Radio & Telecommunications
Terminal Equipment) directive 1999/5/EC and can be used free of charge within the
European Union. Nevertheless, restrictions in terms of maximum allowed RF power or duty
cycle may apply.
The radio module has been designed to be embedded into other products (referred as
“final products”). According to the R&TTE directive, the declaration of compliance with
essential requirements of the R&TTE directive is within the responsibility of the manufacturer
of the final product. A declaration of conformity for the radio module is available from
IMST GmbH on request.
The applicable regulation requirements are subject to change. IMST GmbH does not take
any responsibility for the correctness and accuracy of the aforementioned information.
National laws and regulations, as well as their interpretation can vary with the country. In
case of uncertainty, it is recommended to contact either IMST’s accredited Test Center or
to consult the local authorities of the relevant countries.
Datasheet
WiMOD iM881A Important Notice
iM881A_Datasheet.docx, Wireless Solutions, v1.0 Page 24
11. Important Notice
11.1 Disclaimer
IMST GmbH points out that all information in this document is given on an “as is” basis.
No guarantee, neither explicit nor implicit is given for the correctness at the time of
publication. IMST GmbH reserves all rights to make corrections, modifications,
enhancements, and other changes to its products and services at any time and to
discontinue any product or service without prior notice. It is recommended for customers to
refer to the latest relevant information before placing orders and to verify that such
information is current and complete. All products are sold and delivered subject to
“General Terms and Conditions” of IMST GmbH, supplied at the time of order
acknowledgment.
IMST GmbH assumes no liability for the use of its products and does not grant any licenses
for its patent rights or for any other of its intellectual property rights or third-party rights. It
is the customer’s duty to bear responsibility for compliance of systems or units in which
products from IMST GmbH are integrated with applicable legal regulations. Customers
should provide adequate design and operating safeguards to minimize the risks associated
with customer products and applications. The products are not approved for use in life
supporting systems or other systems whose malfunction could result in personal injury to
the user. Customers using the products within such applications do so at their own risk.
Any reproduction of information in datasheets of IMST GmbH is permissible only if
reproduction is without alteration and is accompanied by all given associated warranties,
conditions, limitations, and notices. Any resale of IMST GmbH products or services with
statements different from or beyond the parameters stated by IMST GmbH for that
product/solution or service is not allowed and voids all express and any implied
warranties. The limitations on liability in favor of IMST GmbH shall also affect its
employees, executive personnel and bodies in the same way. IMST GmbH is not
responsible or liable for any such wrong statements.
Copyright © 2016, IMST GmbH
11.2 Contact Information
IMST GmbH
Carl-Friedrich-Gauss-Str. 2-4
47475 Kamp-Lintfort
Germany
T +49 2842 981 0
F +49 2842 981 299
E sales@imst.de
I www.wireless-solutions.de
