Heavy Duty Universal Remote Control Kit

I bought the set to implement a low-battery alarm, which involved looking at the circuitry in the receiver box. In answer to some of the questions asked by other reviewers, here are some observations:The input 12 volts through the red wire is wired to the receiver circuitry AND IS ALSO WIRED TO ONE SIDE OF THE RELAY SWITCH. Thus, the relay is not a "dry" switch in electronics terminology (e.g. both sides of the switch are not accessable). As such, it can ONLY control 12 volt DC loads. The other side of the relay switch is wired to the white wire and then, by the user, to the 12 volt DC side of the intended load. There are two ground wires that are lighter gauge than the red and white wires. If you are going to use the entire 15-amp capability of the relay, you can use one black ground wire for the circuitry inside the receiver. Rather than using the second black wire for the ground return, you should run a heavy ground return wire from the controlled load directly back to the vehicle 12-volt ground. It should be at least the same gauge as the red and white wires (heavier than the supplied ground wires). Note that the 15 amp rating is for non-inductive loads like lights. If you use it to control 12 volt DC motors, you should restrict it to a lower current rating because of inductive arcing when the contacts open up. Otherwise it won't last long.The relay is not a latching type by itself, but is held latched by an output line from the microprocessor on the circuit board. The incoming signal from the remote is a digital pulse train and is different for "on" and "off" commands. I could not tell whether the unit uses a rolling code like car door remotes, but the pulse train complexity is at least consistent with one. The pulse train is decoded in the microprocessor and turns the coil drive on and off.The blue antenna wire is fed through the same hole in the case as the rest of the wires. That makes it run right next to the power wires, which is definitely not optimum for maximum range. If you want to push the range, open the case and pull the blue antenna wire loose from the heat shrink and drill a small hole in the case to let it exit by itself near the small coil. Keep it stretched out straight and away from metal, especially grounded metal. That will provide the greatest range that the unit is capable of. I only needed about a 50 foot range. The remote turns on the receiver every time at that range.The remotes seem well made, and have an indicator LED that shows when either button is being pushed. The battery is 12 volt alkaline (VR22/CN22/CN23A or equivalent) and is about 0.3 in diameter X 1 in long. Apparently, they are used in alarm applications.The receiver unit seems pretty well made and works well, but the plastic receiver box is relatively thin, so be careful mounting it. It is also not completely waterproof, so don't mount it where it will get wet unless you seal it somehow.Nice product!

I purchased this remote control for a car project where I needed a radio in the trunk to be switched on and off. The box is not very heavy duty or weatherproof, so if that is a requirement, this may not be the product for you. Since I'm using mine mounted in the trunk, those were not issues for me. It is pretty simple: constant 12v in, and switched 12v out. In my case, I hooked the 12v output to a relay that signals the radio to shut itself down (like a computer shut down), rather than just cut the power. If you needed high current switching, you would just use a high current relay and have this box turn your relay on and off. It works very well. The remotes are well made. The button has a very positive click and the light comes on when you press the button so you know the signal has been sent. It has not failed to work since I installed it. The switching response is pretty instant, maybe 1/4 of a second.

I bought this unit to control a 42" light bar installed on the back of my 7 x 14 trailer. I have this light bar on the trailer in case i need to pull over on the side of the road or i am in an area where i need to create visibility. The unit is wired inside of an all aluminum enclosed trailer. Installation was extremely simple and straight forward. The range on the unit, however, was dramatically decreased due to no line of sight with the unit and the remote. I probably sit 12 feet away from the unit when in the driver seat. There is roughly a 3 second delay that i have to hold the on button for it to trigger the unit. Im sure that it would be a different story if i get creative with the antenna wire. Overall, the unit works great and serves the purpose of being able to turn on the light bar without having to climb into the trailer to turn it on. I highly recommend this product.

Straight forward install. No instructions but wires are labeled. 12v in, 12v out, 2x black grounds and a blue antenna. I have not tested range more than like 10 ft but so far worked well. I use it on my toddlers PowerWheels truck in case he's heading for danger. Keep in mind that for most applications you're going to need a relay. See how many amps your device draws to know for sure. This thing is feather weight with tiny wires so I'd say only use solo (w/o relay) with something at half the rating. Relays can be had cheap on Amazon. A relay is simple- it's a switch but it lets a main power thru it and you use a low power switch like this to open or close the main power- so it's a way for a small switch to turn on/off high power devices that would otherwise cook it. I was going to buy a car alarm to accomplish this but happy to find smaller, simpler, cheaper here.

I tried to use this to replace a worn out 12v kill switch. they came with no instructions. I have done a bunch of these before and matched wire for wire with the switch I removed. the result was a popped fuse. I reversed polarity result another popped fuse. truly a case of you get what you pay for

Another fragile, cheaply made product from overseas.Actually not that cheap.Anyway it works and satisfactorily as well.Easy to set up.One of the key fob batteries was dead but I'm used to something always being amiss. OK so that makes the cost over $20 bucks after getting a new battery.Like I said not cheap at all for the quality. It's in an enclosure controlling an outside solar light.Bet it doesn't last 3 months.Like they say never use these things for emergency applications.In fact never use them for anything you depend on in any serious way.

Great product, good quality and super fast shipping.