Four Channel 5V Relay Shields Optocoupler Module V1.3 For Arduino Relay Expansion Board

Features: For Arduino dedicated relay shields, it fits perfectly. Support 4 channel 3A relay control, for xbee wireless module and so on. Independent external power supply and opto-isolator, effective to avoid being accused of electromagnetic interference of the device. The circuit board with fine workmanship is durable. It can help relay switch, disconnect, and connect multiplex circuit at the same time. Specifications: Material: ABS Size: Approx. 8*5.6*1.5cm/3.15*2.20*0.59inch External supply voltage: 7-12V(＞200mA) Relay switching voltage: 240V AC/60V DC Relay switching current: 5A Contact load capacity: 1A 250V AC, 3A 120VA/24V DC Quantity of relays: 4 Wireless output interface: (Relay Serial Port)For xbee/Bluetooth Bee/Wireless Programming Module Occupied port for Arduino: (relay)Digital port: 2,3,4,5, (Wireless Module)Ditital port: 0,1 Package list: 1 x Relay Expansion Board