Sonoff DIY DUALR3 Manual Del Usuario página 57

For FCC:
Frequency range
Wi-Fi: 2412-2462MHz
Maximum RF output power of the product
Wi-Fi: 17.85dBm
For CE RED:
Frequency range
Wi-Fi: 2412-2472MHz
Maximum RF output power of the product
Wi-Fi: 18.36dBm
RF exposure
RF exposure information: The Maximum Permissible Exposure (MPE) level is
calculated based on a distance of d=20 cm between the device and the human body.
To maintain compliance with the RF exposure requirement, a separation distance
of 20 cm between the device and the human should be maintained.
Shenzhen Sonoff Technologies Co., Ltd.
1001, BLDG8, Lianhua Industrial Park, shenzhen, GD, China
ZIP code: 518000
MADE IN CHINA
BT: 2402-2480MHz
BT: -1.90dBm
BT: 2402-2480MHz
BT: 3.93dBm (Inclusion antenna gain)
Website: sonoff.tech