Petsafe VT-800 Manuel D'utilisation page 26

Canada
Radio Standards Specifications (RSS)
This device complies with Industry Canada licence-exempt RSS
standard(s). This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions: (1) this device
may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired
operation of the device.
This device has been designed to operate with the antennas
listed below and have a maximum gain of -22 dBi. Antennas not
included in this list or having a gain greater than -22 dBi are strictly
prohibited for use with this device. The required antenna impedance
is 120 ohms.
This device has been designed to operate with a 3" (76.2 mm) long
antenna, Part Number: 610-1525-2, provided with the equipment.
Use of other antennas may violate Industry Canada rules and void
the user's authority to operate the equipment.
To reduce potential radio interference to other users, the antenna
type and its gain should be so chosen that the equivalent
isotropically radiated power (e.i.r.p.) is not more than that permitted
for successful communication.
Australia
This device complies with the applicable EMC requirements specified
by the ACMA (Australian Communications and Media Authority).
26 www.petsafe.net