Sonoff 4CH Pro User Manual

You may choose to power up by 5-24V DC or by 90-250V AC. Each relay
without voltage output.
R1-R4 work as local control switches, you can directly press it to turn
on/off the corresponding gang. They also work as pairing button.
If you connect the Sonoff 4CH Pro with a motor, the wiring instruction is
as below:

Sonoff 4CH Pro Specifications

General

Channels	4
Wi-Fi Standard	802.11 b/g/n
Max Current	10A per channel
Max Power	2200W per channel
Operating Temperature	-10°C to 40°C
Operating Humidity	5%-90% RH, non-condensing
Material	PC V0
Certification	CE, FCC, RoHS
Voltage Range	90-250V AC
Dimensions	145 x 90 x 40 mm