
ETRX3USB
©2015 Silicon Labs - 7 - ETRX3USB Product Manual (r4)
5 Regulatory Information
The ETRX3USB and ETRX3USB+8M as well as the ETRX3USB-LRS and ETRX3USB-LRS+8M
have been designed to meet all national regulations for world-wide use. In particular the following
certif ications have been obtained:
5.1 FCC compliance Class B Digital Device
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause
undes i r e d op er ati on.
Note: This equipm ent has been test ed and fou nd to comply with the limits for a Class B di gital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult t he de al er or an experienced radio/TV technician for help.
Modifications not expressly approved by the manufacturer could void the user's authority to operate
the equipment under FCC rules. An FCC declaration of conformity is available separately from the
Telegesis website
The ETRX3USB and ETRX3USB+8M contain a modular radio transmitter with FCC ID
S4GEM35XA. The ETRX3USB-LRS and ETRX3USB-LRS+8M contain a modular radio transmitter
with FCC ID S4G EM35XB.
5.2 Canada – Industry Canada (IC)
This Class B di gital d evice complies with Canadian ICES-003. Cet a ppareil numérique de la classe B
est conforme à la norme NMB-003 du Canada.
5.3 European Certification
The ETRX3USB and ETRX3USB+8M as well as the ETRX3USB+LRS and ETRX3USB-LRS+8M
li m i ted to a m ax im um power level o f 21.15mW e.i.r.p. (13.2dBm) have been tested and comply with
the follow ing stand ar ds:
Radio: EN30 0 328 v1.8.1
Not Recommended for New Design