The applicable test standard will be ETSI EN 300 328

Zigbee devices should transmit at:

1. 2405 MHz (Channel 11)

2. 2440 MHz (Channel 18)

3. 2480 MHz (Channel 26)

If a Wi-Fi device serves as an access point, it should transmit at:

1. 2412 MHz (Channel 1)

2. 2437 MHz (Channel 6)

3. 2472 MHz (Channel 13)