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This 1-channel 12V relay module gives a microcontroller project a simple, reliable way to switch a higher-power AC or DC load, using optical isolation between the control and load areas to keep the low-voltage logic side protected from whatever the relay is switching. It's built on a double FR4 circuit board with SMT processing, and its screw terminals, marked C, NC and NO, give a secure, tool-tightened connection point for wiring in a load, which is more robust for anything installed semi-permanently than relying purely on jumper wires.
The relay itself is rated for 10A at 250VAC or 10A at 30VDC, comfortably covering common loads such as solenoids, motors, lights and fans, and a transistor-driven design protects the relay coil from the current demands of the switching signal.
A freewheeling diode is included to protect the circuit from voltage spikes generated when switching inductive loads like motors or solenoids, a common source of damage in relay circuits without this protection. LED status indicators show the module's state at a glance, and mounting holes are provided for securing the board inside an enclosure. KF301 terminal connectors are used for the screw terminal block itself.
Trigger voltage is 12VDC, and the board measures 53mm by 18mm by 18.5mm, weighing 16g, a compact size for the amount of switching capability it offers. It works directly with Arduino, AVR, PIC and ARM-based microcontrollers without additional interfacing hardware.
Home automation, irrigation control, and general appliance-switching projects needing a dependable, isolated single relay channel will find this module a solid, well-protected standard part.
AC and DC appliances such as solenoids, motors, lights and fans, up to 10A at 250VAC or 30VDC.
12VDC.
Yes, a freewheeling diode protects against spikes from inductive loads.
Through screw terminals marked C, NC and NO.
Arduino, AVR, PIC and ARM-based boards.
| Brand | Generic |
|---|---|
| Selling unit | PCS |
