This is a 5V 4-Channel Relay interface board, Be able to control various appliances, and other equipments with large current, each one needs 15-20mA Driver Current
Equiped with high-current relay, the maximum output of the relay: DC 30V/10A, AC 250V/10A
Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
There are four fixed screw holes at each corner of the board, easy for install and fix. The diameter of the hole is 3.1mm. Indication LED’s for Relay output status
Note: This item is suitable for 14 years ond older