Working voltage: 12V-24V; Load current: 8A; Operating frequency: 433MHz; Receiver size: 100 * 50 * 36mm; 12V wireless remote control switch. The main function of the DC motor speed controller is to control the motor switch and speed regulation. Easy to install: Simply install the DC motor speed controller receiver between the device to be controlled and the power supply (just wire and use), and you can use a 12V wireless remote control to remotely turn on and off the device and control the motor speed remotely. Signal reception: 433MHz RF wireless remote control switch, can pass through floors, walls, and doors, stably control the receiver from anywhere within a reliable distance, with a maximum range of about 30 meters, stable signal, and no obstacles. Users can remotely control the DC motor through a remote control. Self locking+speed regulation/dimming: Use the three buttons on the remote control. Press the learning button once to turn on the learning indicator light (the indicator light is in the lower right corner of the display screen), then press the ▲ button on the remote control to learn. The learning indicator light will flash three times and then turn on. Press the ▄ button on the remote control again, and then press the ▼ button on the remote control again. The learning indicator light will flash three times and then turn off. Learning is successful. Widely used: This DC motor speed control remote switch is used in industrial control and safety fields, DC motor speed controller can be Wireless remote control switch through remote control，and can remotely control lighting, motors, lamps, fans, etc.