Check the listing for details. Wireless 433Mhz 4 Channel RF Remote Control Switch Receiver with 2 Transmitters. Condition: New. Listed at 30.91 USD. Document Features The wireless signal can pass through walls, floors and doors, strong penetration. Stable and reliable performance, high receive sensitivity and confidentiality, large storage capacity and low energy consumption. The internal circuit design adopts the SMD process and the acoustic surface resonator is used for frequency stabilization. The optional coding chip adopts SC2260/1527, and the power supply is powered by the built-in CR2016 two-cell battery. Generally used in remote control of radio equipment, such as energy-saving lighting, home security systems, industrial or home remote control. You can turn on/off the receiver with transmitter (remote control) from any place within a reliable distance. Specification Receiver: Rated Voltage 12V Weight 80g Receiver Sensitivity more than -105dBm Rated Current 10mA Channel 4-channel Working Frequency 433mhz Output Current Less than 2A Max Load Current 10A Transmitter: Button 4 buttons Weight 28g Rated Voltage 6V Rated Current 10mA Encode Intelligent learning Working Operation 433MHZ Working Current (DC6V) ≤13mA Dimensions 70mm×38mm×15mm/2.76"×1.49"×0.59" Light's Showing Status being pressed(blue light is on) Color Red Working Mode: Momentary Don't connect jumper with any Pins Latched Connect jumper with Pin1 and Pin2 Toggle Connect jumper with Pin3 and Pin4 Pairing Method Press learning key on receiver, when you hear "Bi" from buzzer, immediately press the specified key on remote to learn, after the receiver receives the signal, you will hear "Bi" from buzzer, means learn successfully. Clear Code Long press learning key on receiver about 10 seconds until you hear "Bi" from buzzer, means saved information has been cleared successfully. Wiring Package 1 × Switch (receiver) 2 × Transmitters 1 x English Manual