New production of digital multi-frequency 3-key wireless remote control using digital display technology, can be used as a number of remote control Use, a total of 20 remote control can switch (default) Remote elevator controller is a very widely used wireless control device, can be used in garage door control and projection screen control, remote control curtain, and other fields, has the advantages of convenient installation using a simple safe and reliable. System composition: 1three key remote control (function : up - stop - down) 2remote elevator controller Main technical indicators: 1 working frequency: 315 MHZ/433MHZ 2transmitter operating voltage: 12 v23a (battery) 3receiver working voltage: AC 220 v 4rated power: 1000 w Method of code: Hold the key learning two seconds, lights out, press any key, remote control lights flashing, learning success. Note 1pay attention to choosing the right working voltage, otherwise may damage the deviceeven life-threatening 2load power contact capacity, correctly approach should be less than 70% of contact capacity. 3If found remote distance changes to be shorter, please replace the remote control( battery 12 v 23A) 4 When installation, please disconnect the input power!!!!!! Frequency only have433 MHZ can choose ,will send 433 MHZ thank you! package included: 5*receiver (with the cover) 1* transmitter (with battery)