This is a 5V, 10A 2-Channel Relay interface board. It can be used to control various appliances, and other equipments with large current. It can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
It has a 1x4 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays. The pins are marked on the PCB:
There is a second 1x3 (2.54mm pitch) pin header for supplying the "relay side" of the board with 5V. At delivery, a jumper is present on this header selecting the 5V signal from the 1x4 pin header to power the relays. For default operation, don't change this jumper!
The pins of the 1x3 pin header are marked on the PCB:
If opto isolation is required, an isolated 5V supply should be used. For normal operation, a jumper bewtween pins 1 and 2 selects the 5V signal from the 1x4 pin header. This means both the "input side", and "relay side" use the same 5V supply, and there is no opto-isolation.
Please note this board is not manufactured by Modtronix! We do not have control of the brand and quality of components used! For boards using durable, brand name components, also have a look at our range of Modtronix products. Following are some lists (created by search terms) of Modtronix products:
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