1pcs 5V 12V 1 2 4 6 8 Channel Relay Module With Optocoupler Relay Output 1 2 4 6 8 Way Relay Module Expansion Board for arduino

    5v 1 channel relay   Specification:     1. VCC: Power interface ,5V 2. GND: Ground 3. IN: Control interface .Drive Current at least 4mA 4. COM: Control circuit ground ,Connect to GND 5. Size: approx. 41 x 16 x 16mm/ 1.61 x 0.62 x 0.62'' 6. Weight: approx. 12g     5v 2 channel relay   This is a 2 Channel 5V Relay interface board, Be able to control various appliances, and other equipments with large current. It can be controlled directly by Microcontroller(for Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) .  1.5V 2-Channel Relay interface board, and each one needs 15-20mA Driver Current  2.Equiped with high-current relay, AC250V 10A ; DC30V 10A  3.Standard interface that can be controlled directly by microcontroller (8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)   5V Relay Module 4-Channel   This is a 5V 4-Channel Relay interface board. Be able to control various appliances, and other equipments with large current. It can be controlled d