XY-WJ01 Delay Relay Timer Module DC 6-30V 12V 24V 0.01s-9999min 50mA Digital Timer Period Switch AC 220V Power On-Off Controller LCD Display Button

So far so good. I purchased 3 wire plug for the trip circuit on the inside. It's amazing the different configurations. It's easy to program. Using infred for the trigger to a solid state relay. Works great so far.

This worked out great for a slot car racing timer so you can race timed heats. BS Slot Cars YT you can see my video on how to hook it up and use it.

Only a 4 because of the TOTAL LACK OF USEFUL instructions. Go find a youtube video to figure this thing out, but after that it works just fine. have it wired up to a trigger switch and works everytime. Pay someone a few bucks seller to write real instructions in english and slip it into the box.

You will need to know how to wire electronics. You will need a power source. This is a timer module ONLY. That being said it has done a flawless job! Using this as a timer for turners in an incubator. Programing was easy, but you will need to hunt down a tutorial/explanation video etc if you don't have some electronic intuitiveness. Good news is there are several good ones that pop up when you google the model number etc of this device. There are several videos on wiring this that pop up as well. This has worked flawlessly 24/7 for the last 6 months. I would not hesitate to buy again.

so... I needed a way of alerting that a radio Push to talk time out timer was about to hit. I use this device to begin counting when I close the PTT Circuit for my two way radio station. At that moment the timer begins counting 180 seconds. (You can set the value to anything you'd like, up to around 10 minutes I think). when the time has elapsed a relay output energizes an external relay, which turns on a rotating LED Beacon to warn that I have only a half minute remaining before my PTT Key gets electronically cut off. Gives me a chance to Cleanly Break, and reconnect. this is a component to whatever project you can imagine that requires a programmable timer. Could just as easily use the other relay contacts and give a green light to me until the time expires. It's all up to you to design and build your circuit to suite your needs. I recommend an enclosure. I made one from wood, and attached the beacon to the wooden base. Made a recangular cutout to mount the timer panel in and it looks like a well made purpose made device. I only wish the back light would remain on so the display were always visible but it's not an important feature to me.

Worked flawlessly for more than one month since I purchased.

The timer works very well after I determined how to use it. There were no instructions or documentation in the package. Had it not been for YouTube, I would still be trying to set it up. Or, I could have returned it for credit. What retailer sells a complicated device with no instructions or owner manual????

When i received it the terminal screw snapped. It will reset if the power is lost and to activate it you have to press a button on the device itself. Did not meet my needs.