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.

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.

I assume this timer is basically the same as all the other timers on Amazon that look like it but this particular one was the cheapest I could find which is why I went with this one. They can also be set to an interval time as low as .01 seconds which is the fastest I could find as well. I'm using mine to power a microwave oven sourced transformer in a homemade spot welder for lithium battery cells. Haven't used it a ton yet but so far it has done exactly as it needs to do without any problems so the product seems solid. You don't get any instructions with it and unfortunately the descriptions they have on this page are terrible. Do yourself a favor and Google "XY-WJ01 manual" and you will find PDFs with much, much better directions. I'd give this thing 5 stars because for the price you can not beat it but I have to knock one star of for a couple reasons. First being the directions; this thing is actually capable of a lot of different modes which could be very useful to some (and you'll see them in those PDFs) but going just by this page I had no idea; so really they're selling themselves short, the product is really good but the English is really bad. Second is the barely mentioned external trigger functionality! I'm triggering my welder with a push button on one of the handles, but you might not even know you could do that from the description. They do try to mention it but barely. There is a 3 pin connector on the board inside of the box which has a shared common, a low voltage trigger input and high voltage trigger input. (Again those PDFs I suggested have the descriptions and voltage ranges listed). So again they're selling themselves short on a super useful feature! Also, they do not include a harness for that 3 pin connector but it is your standard modular type plug so you can probably find one somewhere like I did (I think it came off and old car alarm box I had sitting around). So overall it'd be nice if they included that harness and simply making a better website would make this thing perfect in my opinion, but even with those minor faults I'd still recommend this to anyone looking for one of these without hesitation. Oh! I almost forgot the best part! So the first time you power it up you'll see the time interval on the first row at default "0000" then the second row shows you the program mode, which default is "P0", then it shows the relay status which at defaults is open or "OP"......... Heck it was worth buying it just to see that, it made me laugh! Thanks!

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.

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.

Worked flawlessly for more than one month since I purchased.

Perfect for the DIY rifle brass annealer project you have always wanted to build

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.