12V Relay Remote Switch Wireless RF Remote Control Switch 4 Channel Relay Module 433Mhz Transmitter Receiver Kit Universal Remote Controller for Lights Ceiling Fan Garage Door Opener Gate Car & More

I built a camper in 2019 and have been upgrading it. I wanted to add more light so added 8 more puck lights in the process of installing a cedar ceiling. They are on an overall remote control linked in with 6 lights in the kitchen area. That gives me overall control over the on/off and dimmer function.I wanted to be able to control the on/off function of the 8 new lights individually in zones of 2 lights. The little remote circuit allowed me to do that. Each 2 light string was connected in series into a central distribution box. I just broke the positive line to each string and inserted the relay on the new board. That worked giving me on/off control for each leg individually. Worked like a charm. I would buy again in a heartbeat.I especially liked the wire terminals. I was able to crank down on the wires quite hard. Nothing stripped. I know those wires are not coming out any time soon.All soldering seemed quite good and programming was very easy. This was a great buy. I wish I could say the same for many other electronic circuits I have bought.

Web searches (on the subject) may result in many instructions of the controller which may not apply to the product you bought. They are interesting anyway.The machine-translated manual of GV-RK04S-12 may not completely satisfy many readers, but the content of it is valid. Interesting find!You find the jumper underneath the learning button, right? You count the pins from left to right: 1-2-3. Jumping 1 o 2 you'd have the loads (lights) moving from one to another (remember the ring counter); No jumps at all (3 pins are free: momentary mode; Jump 2 to 3: toggle mode. That's it! Read the whole manual? May be you don't have to. JUST PLAY WITH THE JUMPERS. (If for the moment you don't need the jumper, save it.)Please stick to the attached manual (or just play with the jumper!) Fun guarranted.

Works great. Has awesome range. I just wish the remote had a cover, or an on off switch.

This thing works, so far. It has three modes which you can select with a jumper:- Individual latching (each relay is toggled on / off with a button press)- One at a time latching (only one relay can be on; turning a different relay on turns off the active relay)- Fully independent momentary (as long as the button is pressed, the relay is on)There is a minor lag in operation. It's noticable only some of the time.

This device randomly turns on every 15 or so minutes. The remotes were both sitting on a table and not being touched at all. I tried repairing the remotes several times to no avail.I tested the switching and the functioned correctly with the remote. Approximately 15 minutes after installing the neighbor came over to tell me the lights were on. I assumed I had touch the remote accidentally so I put the remote on the table in my shop.About 15 minutes after that my son came home and informed me the lights were on again. I located the second remote and placed it on the table also. I went back out to check about 20 minutes later and the lights were on again. I disconnected the unit at that point.I know that sounds dramatic but imagine if this was hooked to a dump trailer or 5th wheel lifting system. which weighs thousands of pound and it randomly activated. (Both scenarios have been described in the comments.)

You need to jumper positive to the middle of each relay to run lighting.Rated for 20a each, but I'm not sure how you'd do it without melting something..

This set of relays was exactly what I was looking for. I am disabled and confined to a wheelchair. My van is equipped with a lift and automatic doors which are operated by magnetic switches. These switches are sometimes hard to get to due to their location. This device makes it possible for me to operate the doors and lift from anywhere so I can avoid water puddles and obstructions.

The Term Learning Button is only a Remote Pairing button ,,, not relay learning as I expected.Here is my scenario.Button "A" - A Jog button ( momentary)Button "B" - Forward Reverse (Latching)I was under the impression from reading that I could put the jumper in the mode I wanted (Momentary) then press learn then the "A" button .... then change the jumper to Latching ... press the learn button then press "B" and I would have "Independent" functions on those buttons.That is not the case ... the jumper determines the "One" and only function all relays follow.If you need only latching or momentary etc. on "all" the relays then this will work.Mixing functions is not possible.So, because of the use of the term "Learning and Independent" instead of "Paring Button , mode jumper" I will give a rating of 3 .... Nice unit .... easy setup ... misleading terms (language problem ? )