2 Relay Board 10A / 250V – Opto-Insulated Inputs 3-24V for Arduino etc.
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|Discount Type||Quantity||Volume Price|
|Quantity||3 - 9||7.5% $3.52|
|Quantity||10 - 24||12.5% $3.33|
|Quantity||25 +||15% $3.23|
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This relay board needs a power supply of 5VDC. The opto-insulated inputs can handle 3-24VDC control voltage, with a maximum input current of 22mA at 24VDC. A jumper can switch between 2 modes: If the jumper cap is set to VCC and JD-VCC, relays and opto inputs are using the same 5VDC power supply. If the jumper is open, a separated 5VDC power supply can drive the relays and the inputs are open for voltages up to 24VDC. The inputs are LOW-active. It means the output of a microcontroller (like Arduino or Raspberry) draws the input current to GND. The LOW level activates the relay, and a high level (or 3-state level) deactivates the relay.
High-Current relay modules (30A) are available as well.
8 Relay Module Shield 10A with Optocoupler Inputs 3-24V0 out of 5