Overview: The remote control switch with 30A relay, you can load high-power appliances, receiving the way for the learning type of single-chip decoding, you can learn more than one remote control, and each remote control all the keys can learn, each remote control can control multiple switches, Can also be a number of remote control to control a switch, simple and flexible combination of any combination of remote control Each button to learn different ways to work, to avoid the way through the cap to switch the output of the trouble, easy to use, suitable for multiple areas of multiple uses , The output switch signal, easy to install, convenient. Use: mainly used in lamps, electric doors, windows, lifting equipment. Water pump, elevator control, security industry and agricultural watering and other long-range wireless remote control and other fields, with easy installation, the use of simple and safe and reliable. Specifications: 1, the working voltage: DC12V-48V 2, the operating frequency: 315MHZ / 433MHZ (optional) 3, the working temperature: -40 ~ +85 4, weight: 0.27kg 5, the maximum load: NO (30A / 240VAC), NC (20A / 240VAC) 6, the receiving sensitivity: -105dBm 7, Size: Board: 122x87x17 (mm) With shell: 144.8x91x40 (mm) output method: Press A (data bit 1000) key to learn, the controller jog; Press B (data bit 0100) key to learn, controller interlock; Press C (data bit 0010) key to learn, the controller self-locking; Press the D (data bit 0001) key to learn, the controller (1,2) jog + (3,4) self-locking; Remote control A (data bit 1000) control relay 1; Remote control B (data bit 0100) control relay 2; Remote control C (data bit 0010) control relay 3; Remote control D (data bit 0001) control relay 4; Learning methods and steps: 1, press the receiver to learn the key - light, said into the learning state 2, press the remote control any key - light slowly flash three, said the study has been successful. Clear the saved information Long press the receiver to learn the button until the LED lights flash five times after the extinguished, that the information has been successfully cleared Note:only have 433mhz frequency Frequency Distance: 50M-200M ( Ideal Distance WITHOUT Any Block and Signal Interfere,Could Rise or Fall 10%-90% in Real Situation ) package included: A: 1*receiver 1 *transmitter (AA1.5V battery not included ) B: 1*receiver 2 *transmitter (AA1.5V battery not included ) C: 1 *transmitter (AA1.5V battery not included )