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This 5V, 1-channel relay module is built to be controlled by a wide range of microcontrollers, including Arduino, AVR, PIC and ARM-based boards, using standard TTL-level logic straight from a GPIO pin. Optocoupler isolation keeps the low-voltage control circuit electrically separate from whatever load the relay is switching, protecting the microcontroller side from voltage spikes or faults on the switched side of the circuit.
Its relay is rated for a contact current capacity of 10A at AC250V, or 10A at DC5V, covering a solid range of household appliances and lower-voltage DC equipment from a single, straightforward module.
The board includes one normally closed and one normally open contact, giving wiring flexibility depending on whether a load should default to on or off. A triode drive stage increases the relay coil's switching reliability, and a high-impedance controller pin combined with a pull-down circuit both help prevent the relay from triggering accidentally from electrical noise or a floating input signal.
Three separate indicators are provided: a power supply indicator lamp, a control indicator lamp, and a relay output status indicator, giving a clearer picture of the module's state than a single LED would, useful when troubleshooting whether a control signal was received versus whether the relay actually switched.
Anyone building an Arduino, AVR, PIC or ARM-based project that needs to switch a single higher-power appliance or piece of equipment from standard 5V logic will find this module a simple, well-indicated, isolated relay solution.
Standard 5V TTL logic.
10A at AC250V, or 10A at DC5V.
Yes, through optocoupler isolation.
Three: power supply, control, and relay output status.
Arduino, AVR, 8051, PIC and ARM.
| Brand | Generic |
|---|---|
| Channels | 1.000000 |
| Selling unit | PCS |
