DC 12V Programmable Time Delay Relay Module with Metal Enclosure, On Delay and Off Delay Timer for Automobile, Raspberry Pi, Industrial Control, and Other Automatic Control Projects

This is a rock solid good quality product. This was the perfect solution to rig up a solution to trigger remote entry on a door buzzer system. (Hint: connect power supply to an Homekit enabled plug, and activate by voice from anywhere in the world... ) The relay design is reassuring -- fail safe. If power fails, it's going to physically click back. Think through all failure scenarios to be power safe, this kind of physical relay is key. Instructions may not be the clearest, but it can do lots of modes.

I purchased this in hopes to work with one of my Halloween animatronics. The animatronic was a motion activated only unit. I was trying to get it to just continuously play its motion but it did not have this feature. I purchased this product along with a mono 3.5 mm auxiliary cord and a 12 volt DC power adapter and wired it all in together. I chose the fifth setting on this unit and then timed out how many seconds I needed for the animatronic to go through its motion and reset and then programmed that into this unit and it works flawlessly. This is just what I needed for one of my Halloween displays to work automatically without a motion sensor.

Extremely difficult to program using the provided worthless instructions. Finally got a programmed after messing with it for about half an hour. Worked great for a week and quit. Will be returning it. Other reviewers mentioned finding another relay that worked really well, wish they would have left the name of it in their review.

This is an excellent product. I needed an adjustable timer for a diy spot welder i was building. I'm running the dc switch to trigger the timmer. The relay controls the line voltage for the transformer. Very easy to setup. Works perfect.

I am using this product to delay the turn on of my car audio amplifier to a set time after the car is turned on due to the charging system. Functionally this works perfectly. I did have minor confusion while setting up as my original intention was to have the DC in always powered and use my remote (ignition source) as the trigger. It turns out this is not a possible configuration and I had to power the device directly off my remote. In my case my remote is able to supply the required current, but in other situations it may not. My primary gripe is that the case is not easy to install. The holes do not line up well, and I ended up giving up and just using the base without the cover. It at least provides some protection and provides integrated standoffs, though it certainly does not look as clean. Perhaps in the future I'll modify the holes so it fits.

It works well, need clearer instructions for programming

I run a stop light on a remote switch every day and it works perfectly. Super easy to set up

Received this today. Got the metal case also. Installed board in case using supplied screws - had great difficulty inserting all screws due to case being powder coated after screw holes were tapped, plus screw holes are slightly misaligned. Bigger issue is the input and output terminal block labels on metal case are identically marked - as such that I cannot determine which is the input block and which is the output block. Both are labeled "DC+, DC-, and CH1 on the case exterior. The written instructions do not identify which is which. I am stuck - as applying power to the wrong terminals could fry the relay. Can someone please clarify which terminal block is the DC power input block. Thanks.