Universal Waterproof 2 Channel Relay 12V 24VDC/AC 2000FT(600m) Long Range Remote Control Switch for Lights, Water Pump, Heater, Garage Door Gate Opener, Pre-Wired 3.3 Feet External Receiver

wired the two relay outputs for a forward/reverse antenna rotator project for amateur radio. They don't show the wiring for this option, and I suspect its because you can press both buttons at the same time and operate both relays, rather than just one at a time, so if you plan on doing this, do NOT press the two buttons at the same time or you'll not be happy with the outcome, especially if you don't put a fuse inline!!!For wiring these up, run one wire from +12vdc and one from -12vdc (side screw down for power input), +12vdc to each of the relay's "NO" contacts, the -12vdc to each of the relay's "NC" contacts, then use the COM for you + and - output to your motor. Hook up 12vdc to the power input and you should be operational. Pressing button A will spin dc motor one way, B will spin it the other way.Used this setup for an amateur radio contest, rotating a MastWerks 10 meter rotatable mast with a BuddiHex beam antenna about 20 feet up for 24 full hours, moving the antenna back and forth quite a bit and it performed flawlessly! The 3,000mah 21700 lithiums only took 800mah to recharge after all of that, so very little energy required to rotate a 22 foot diameter antenna that whole time!

Reason for purchase was the frequent failure of my gate's built in RF switch to operate from my house. Gate is visible, but over 200ft away and standard remotes were not powerful enough at that distance. With this unit, it is "never fail." I am no longer out on my deck in the weather waving my keychain around hoping it will "click."Easy to install with pre-attached pigtail for connection to my gate controller. Programming requires step-by-step following of the ESL instructions.Wide range of usable voltage inputs was quite welcome when I replaced my old gate opener system which took me from 12v to 24v.Is there a source for additional remotes?

Wired it to latch my entrance gate open for deliveries. The gate is 250 ft from the home and it works fabulously. The range allows me to open the gate from anywhere on my 5 acre home. I was so frustrated in the past having to go to the gate keypad to latch it open every time there were deliveries coming that day. I love this device. By the way, to do this, you have to move the internal jumper to the right position. This feature is not well documented. Look carefully at the documentation that comes with the device.

I wanted this to work. The build quality looked good. The instructions were good. But after I installed it, it worked about 10 times before failing. Maybe I just got a bad one. I haven't decided whether to get a replacement or try a different model.

I bought this to install on a small gas powered ATV for my son. It is a double pole double throw relay. It can be wired normally open or normally closed, and can use 2 separate coils. WORKED LIKE A CHAMP!! THE RANGE IS UNBELIEVABLE!I was skeptical about how far this thing would work, its well over 1000ft. I was looking at buying a remote kill switch from another online source, and the cost was about 250 dollars. It's just a relay folks, thats all you need to make a remote kill switch.I mounted it under the seat of the 4 wheeler and it works perfect.

Very easy to install and works great. Very easy to program to work with my opener.

Advertised functions fit the requirement. Mode selection instructions for jumper were in error. Product failed after first day of use.

We needed a way to open and close our gate, located down a long driveway from our house. Thus unit seemed perfect...and it was, once we got it installed! The instructions are confusing, and difficult to read, since the "pages" are all on one sheet of paper and are positioned in a confusing layout. The verbiage in the instructions are difficult to understand, as if they were translated from another language into English. Tech support is apparently done via e-mail, but we needed someone we could actually communicate with for back and forth questions and answers. We finally enlisted the help of a friend who understands electronics, and finally got it installed after a few hours. Not simple at all, but maybe that was because of our installation... I don't know.The product performs well. Opens and closes the gate using the remote in the house. The signal easily goes through walls and down the long driveway without a problem. We continue to use the car remotes as usual, but now have a way to open and close the gate from the house! Just what we wanted!