Generic 12V One Channel RF Wireless Relay Module with Remote Control

Connect a stable 5V to 12V DC power supply to the module's VCC and GND terminals. The relay's common (COM), normally open (NO), and normally closed (NC) output terminals are used to switch your load. Ensure the load's voltage and current ratings do not exceed the relay's specifications. The included remote will toggle the relay output once the module is powered and the status LED is lit.

This module uses a self-locking (latching) relay. It only draws power (70mA) momentarily to change state and then holds its position mechanically without continuous coil current. A standard relay requires constant power to remain energized. This makes the latching type more energy-efficient for battery-powered or always-on applications where the switched state is infrequently changed.

Typically, these Generic 433MHz modules come pre-paired with the included remote using a fixed rolling code. The remote is usually dedicated to that single receiver module. To control multiple modules independently, you would need multiple remote/receiver pairs operating on distinct codes, which may not be supported. For multi-channel control, consider a system with addressable receivers or a different protocol.

While the exact relay contact ratings are not specified in the provided data, Generic modules of this type often use a 10A/250VAC or 10A/30VDC relay. To ensure safety and longevity, you must verify the relay's markings and never exceed its rated capacity. It is suitable for typical household lighting and appliance loads but not for high-power devices like water heaters or large motors.

The 15-30 meter range is typical for low-power 433MHz transmission in open spaces. To extend it, ensure a clear line of sight between the remote and module, avoid metal enclosures, and keep both devices away from other strong RF sources. Using an external 433MHz antenna (if the module has a connector) or placing the receiver at an elevated location can also improve range. Indoor range will be reduced by walls and interference.