Acer PD724 series - Manual (Page 59)

... English
Appendices
Canada — Low-power license-exempt radio
communication devices (RSS-210)
a. Common information Operation is subject to the following
two conditions:
1. This device may not cause interference, and
2. This device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
b. Operation in 2.4 GHz band To prevent radio interference to
the licensed service, this device is intended to be operated in-
doors and installed outdoors is subject to licensing.