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Application Highlight
Features/Benefits
Overview
Watchport sensors provide a plug-and-play solution for Drop-
in Networking applications. Each sensor connects to Digi’s
XBee® sensor adapter (sold separately) for wireless connectivity
to sensor data over a low power ZigBee network. Sensors are
available to measure distance, proximity, temperature/humdity,
acceleration/tilt, and the presence of water. Monitoring
remote assets with Watchport sensors can preempt damage to
facilities, reduce costly maintenance and warn of threatening
environmental conditions.
When used in a Drop-in Network with Digi’s ConnectPort® X
gateways, Watchport sensors can be monitored over a Wide
Area Network (WAN) connection, providing centralized
monitoring of geographically distributed sensor points. Plus,
the Python® programming engine on the ConnectPort X
provides the software tools to integrate multiple sensors and
create custom applications using sensor readings.
Watchport sensors can be used in many Drop-in Networking
applications. Monitor temperature and humidity levels in a
refrigeration unit or grain silo; detect the presence of water in
a livestock pen; activate a Watchport camera or an alarm when
an access point is encroached; or reduce energy consumption
by automatically powering down lights or other environmental
systems when inhabitants are no longer detected.
Create a Drop-in Network with sensors to monitor
critical environmental data over a wireless connection.
• Ideal for remote monitoring of critical
environmental data
• Plug into Digi’s XBee sensor adapter (via RJ-45
connector) for wireless ZigBee® connectivity
• No external power supply required; draws power
from XBee sensor adapter (via RJ-45 connector)
• A´ la carte product selection allows total customization
• Easy to install and configure
• Extend distance between sensor and XBee Sensor
Adapter with CAT5 UTP cable
Environmental Monitoring Solutions
Watchport® Sensors
for Drop-in Networking
Features Comparison
• FCC Part 15, Class B
• CE
• EN55022
• EN55024
• EN60950
• UL 1950
• CSA 2.2 No. 950
• IEC-950
REGULATORY
APPROVALS
• No external power supply required
POWER REQUIREMENTS
• Operating temperature:
-40º F to +185º F (-40º C to +85º C)
• Relative humidity: 0% to 95%
(non-condensing)
ENVIRONMENTAL
• Each sensor has a 6" cable lead with
RJ-45 connector (1-Wire interface)
Watchport/H Humidity/Temperature
Sensor
• Collects both relative humidity (RH)
and temperature data
• Temperature compensated RH readings
• ASCII command interface
• Maximum reading rate: 20 per second
• Temperature accuracy:
+/- 3.6º F (+/- 2º C) at -40º F to +14º F
(-40º C to -10º C) and +/- 0.9º F
(+/- 0.5º C) at +14º F to +185º F
(-10º C to +85º C)
• RH accuracy: +/- 5% at 0-90%
non-condensing; +/- 8% over 90%
• RH stability: +/- 1% RH (typical)
at 50% RH in 5 years
• Power consumption: 15 mA (normal),
1.0 mA (suspend mode)
• Maximum CAT5 UTP cable length:
500 ft (152.46 m)
Watchport/D Distance/Proximity
Sensor
• Photo-electric sensor with hardware
controlled sensitivity
• Detection range 1.6 to 4.9 ft
(0.5 to 1.5 m)
• Maximum reading rate: 3 per second
• Maximum switching frequency: 100 Hz
• Response delay: ≤5.0 ms (typical)
• Power consumption: 70 mA (max)
• Maximum CAT5 UTP cable length:
500 ft (152.46 m)
Watchport/W Water Detector
• 2 gold plated pins detect wetness
on a non-conductive surface
• Binary output with “Wet” or
“Dry”readings
• Waterproof enclosure
• Maximum reading rate: 5 per second
• Power consumption: 15 mA (normal),
1.0 mA (suspend mode)
• Maximum CAT5 UTP cable length:
1,000 ft (304.8 m)
Watchport/A Accelerometer
• Dual axis accelerometer
• Measures dynamic acceleration
such as vibration or static
acceleration (gravity)
• Measures tilt to 0.1°
• Acceleration from -2g to +2g
FEATURES
Watchport/H, Watchport/W,
Watchport/A
• Length: 2.12 in (5.39 cm)
• Width: 1.19 in (3.02 cm)
• Height: 0.69 in (1.75 cm)
• Weight: 3.00 oz (85.05 g)
Watchport/D
• Length: 1.75 in (4.45 cm)
• Width: 0.74 in (1.88 cm)
• Height: 0.85 in (2.16 cm)
• Weight: 3.00 oz (85.05 g)
DIMENSIONS
• Watchport Sensors for
Drop-in Networking must be used
with XBee Sensor Adapters (sold
separately). Please see
www.digi.com/products/wireless
dropinnetworking/ for XBee
Adapter information.
USABILITY
REQUIREMENTS
Watchport Sensors for Drop-in Networking Worldwide
Watchport/H (Humidity/Temperature Sensor) 70002335
Watchport/D (Distance/Proximity Sensor) 70002333
Watchport/W (Water Detector) 70002336
Watchport/A (Accelerometer) 70002337
XBee Sensor Adapters
XBee Sensor Adapter (802.15.4) XA-A14-CS1R
XBee-PRO Sensor Adapter (802.15.4) XA-A14-CS1P
XBee Sensor Adapter (ZNet 2.5) XA-B14-CS1R
XBee-PRO Sensor Adapter (ZNet 2.5) XA-B14-CS1P
MODEL......................PART NUMBERS
Watchport Sensors for Drop-in Networking
must be used with XBee Sensor Adapters.
See www.digi.com/products/wirelessdropinnetworking/
for XBee Adapter specifications.
You can purchase with confi dence knowing that Digi is always available to serve you with expert technical
support and our industry leading warranty. For detailed information visit www.digi.com/support
Digi International
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