These are a 1/2/4/8 Channel 5V Relay interface board, Be able to control various appliances, and other equipment with large current.
It can be controlled directly by Microcontroller(Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
5V 1/2/4/8-Channel Relay interface board, and each one needs 15-20mA Driver Current
Equipped with high-current relay, AC250V 10A ; DC30V 10A
Indication LED’s for Relay output status.
Module with relay control, ac voltage maximum 250 V, ac current maximum 10 A, dc voltage maximum 30 V, dc current maximum 10 A.
The 8550 transistor drive, drive ability.
Working voltage 5V.
Has the fixed bolt hole and easy installation.
Power indicator (green), Two ways of relay status indicator light (red)
Module interface specifications (6 wire).
VCC external 5V.
GND external GND.
1N1-1N2 interchange relay control interface by single chip IO