Sonoff 4CHPRO - 4-Channel Smart Relay Board

Sonoff 4CHPRO - 4-Channel Smart Relay Board has 4 sets of wireless buttons. It supports switching between 3 working modes as locking - self-locking - inching mode. Sonoff 4CH-R3, 4CH-R3, also supports 1-16s settings. (4CH-R3 only supports 0.25-4s tuning.) This feature allows your switch to turn on for a few seconds but then turns off, which works like an impact wrench. They integrate with the 433MHz RF receiver module and enable them to be controlled by the RF Remote.

Users can remotely turn on/off connected lights/devices via iOS/Android App eWeLink or RF Remote Control. They can also create 8 active single countdown timers to turn on/off automatically at specified time. Timers can run themselves even when the network is unavailable.

Sonoff 4CHPRO - 4-Channel Smart Relay Card Features:

• Voltage Range: 90-250VAC (50 / 60Hz)
• Maximum Current: 10A
• Maximum Power: 2200W / Channel
• Wireless Frequency: WiFi 2.4GHz
• Wireless Standard : 802.11 b/g/n
• Security Mechanism: WPA-PSK / WPA2-PSK
• Housing Material: Anti-fire ABS V0
• Channel: 4
• Size: 145 x 90 x 40 (mm)
• Operating Temperature (recommended): 0ºC - 40ºC (32°F - 104°F)
• Operating Humidity: 5% - 90%RH, Non-Condensing

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