SPECIFICATIONS:2-channel 12-24V AC/DC receiver! Fully compatible with DASPI ZERO2, ZERO2RC/4RC, HAPPY 2/4, POPS2 remotes! High quality 433.92Mhz rolling code receiver!Distance up to 100 meters!Memory up to 400 remotes! Universal 433.92Mhz rolling code 2-channel receiver that is fully compatible with DASPI ZERO2, ZERO2RC/4RC, HAPPY 2/4, POPS2 remotes. The 2 channels of this receive allows you to operate 2 different garage gates and/or other electronics using your original Daspi remote, then this receiver is for you!!!The benefits:1) Can be learned with your existing 433,92Mhz Fixed and Rolling code 433,92Mhz remote controls separately and simultaneously2) An option to control and use 2 gate automation or alarm systems simultaneously3) Can be used in cases, when your receiver's memory is full and can't accept any additional remote controls. By connecting this receiver to your system, you can increase the amount of remotes up to 4004) By connecting this receiver to your system you will save a lot of money, especially if you require 10-20 or more additional remotes5) If you have few different remote controls from different systems, you can replace them with the one 4-channel remote!!!It's very handy to use 1 remote instead of 3 or 4. HOW TO CONNECT: Connect 2 wires of CH1 or CH2 to your control board between:1) COM and N/O2) COM and P/P (Push button) in parallel to Push button. All you need to do is to connect this receiver to your control board by using only 4 wires (2 - for power; 2 - for relay)Note: The abbreviation on your board can be different, so follow your manual. > With these 4 channel remote controls you can operate up to 4 absolutelly different system !EXAMPLES: 1)GATE1 + GATE2 + ROLLER SHUTTER2) GATE1 + ALARM SYSTEM + OUTSIDE LIGHTING + FOUNTAIN 3) GATE1 + GATE2 + GATE3 + GATE4. In order to use 1 remote for up to 4 different systems, you will require to purchase additional receiver(s).Programming video: click here IF YOU NEED REMOTE CONTROLS FOR THIS RECEIVER, HERE THEY ARE: click hereIF YOU WANT TO INCREASE REMOTE RECEPTION RANGE UP TO 250 METERS, YOU CAN USE THIS 433,92Mhz AERIAL: click here PROGRAMMING: 1. Learning transmitter’s codes: Press “learn 1” or “learn 2” for 1 second, the “learn_led” light, then, press the button which you choose on the transmitter till the “learn_led” flash and go out, the transmitter’s code has been stored. Repeat the above steps for other transmitters. 2. Erasing transmitter’s codes: Press “learn 1” or “learn2” and hold on to make the “learn_led light till go out, all codes of transmitters which had been stored are erased. ANT Receiver Antenna CH1 Relay Output 1 CH2 Relay Output 2 V+ Voltage + GND Ground