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4 Channel 12v DC Relay Module
R 82.00
4 Channel Way DC 12V Relay Module with Optocoupler Low Level Trigger Expansion Board
Can be used as microcontroller development board module or can be used for home appliance control
12V to TTL control signal
The control signal DC or AC, 220V AC load can be controlled.
There is a normally open and one normally closed contact
A power indicator light
Transistor drive to increase the relay coil control pins high impedance.
The control pin has a pull-down circuit to prevent malfunction relay vacant.
AD-4CH12V-Rel
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4 Channel Way DC 12V Relay Module with Optocoupler Low Level Trigger Expansion Board