Product Description

SPECIFICATION:

• This is a 2 Channel 5V Relay interface board, Be able to control various appliances, and other equipment with large current.
• It can be controlled directly by Micro-controller(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.Equipped with high-current relay, AC250V 10A ; DC30V 10A 3.Standard interface that can be controlled directly by micro-controller (8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
• This is a 5V, 10A 2-Channel Relay interface board. It can be used to control various appliances, and other equipment with large current.
• It can be controlled directly with 3.3V or 5V logic signals from a micro-controller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).

It has a 1×4 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays. The pins are marked on the PCB:

• GND – Connect 0V to this pin.
• IN1 – Controls relay 1, active Low! Relay will turn on when this input goes below about 2.0V
• IN2 – Controls relay 2, active Low! Relay will turn on when this input goes below about 2.0V
• VCC – Connect 5V to this pin. Is used to power the opto couplers

Advanced:

The pins of the 1×3 pin header are marked on the PCB:

• RY-VCC – This is the 5V required for the relays. At delivery, a jumper is present on this and the adjacent (VCC) pin.
• VCC – This is the 5V VCC supplied on the 1×4 pin connector
• GND – Connected to 0V pin of 1×4 pin header

If opto isolation is required, an isolated 5V supply should be used. For normal operation, a jumper between pins 1 and 2 selects the 5V signal from the 1×4 pin header. This means both the “input side”, and “relay side” use the same 5V supply, and there is no opto-isolation.