Programmable Timer Delay Relay Module DC 5V-36V Adjustable On/Off Cycle Timer Switch with Dual MOS Output Digital Display Emergency Stop Protective Case for Smart Home Automation DIY Electronics

I got this timer as a test for some of my electronic projects. The reviews stated it is versatile, so I got one to see, and it is. You can set the timer to count down in several different modes. The modes vary according to how you want the output to turn on/off, reset, and loop. I must admit the timer seemed complicated at first until I got the hang of it. Once I figured out the modes and how to set them, it was pretty easy. One thing to mention is that the two pins on the left side (labeled Sign and GND_T are the trigger pins. They require voltage to be applied to start the timer.The case is also nice. I show the pictures with paper still stuck and paper removed. Removing the paper requires a little bit of work, but it looks so shiny once it's all cleaned up. All the pieces fit as they should. Once completed it looks like it belongs in front of your project for all to see.Overall, it's a nice timer with lots of options. I see working for many applications, maybe even science projects because it also looks nice.

The media could not be loaded. I wanted a way to turn on and off small hobby projects on regular intervals. I came across this kit and got hooked with the simplicity and size initially. Ultimately this is way more versatile than I anticipated, which is a good thing!It comes pre-assembled, and I only needed to put the acrylic case together. It was easy to do, but I did end up breaking a piece, although it was nothing major and it doesn’t affect functionality nor it affects the aesthetics of the kit.This timer is looks and feels very good, the buttons are clicky and the terminals feel very good. Although it claims to support 400W I wouldn’t use it for such high loads. The acrylic case is well done, although I think the tolerances are very tight, I had to force it a bit, and ended up breaking a piece. As a timer, once setup, it works as expected, although there are many modes and it can get confusing initially.It was rather hard to use initially, due to the multiple modes it supports. I just had to slow down things and read the instructions for each mode carefully and then I understood what I needed to do to make it work how I wanted.Mode 3.2 is what I was looking for, which is for setting an on time, off time and loops independently. The other modes use a trigger functionality that seems very interesting and I might use some of those for other projects.

This little timer module is handy for lots of things....within limits.Setting and using the timer is easy. I really didn't need the instructions for anything.I had 1 issue with it. The plastic case has an incorrect part. See the third and forth images. One short side was made wrong. It was too long and the opening for the wire connections was too small. Some filing and I made it fit the rest of the case and the proper opening size.Feature improvements:The timer uses mosfets directly on it's output. This is good and bad depending on your application1. If you need to control something and have it electrically isolated from the timer, you will need to use a relay attached to the output. For stuff powered from the same source as the timer, the mosfets are fine used directly.2. IF you need more than 30v DC, again, you need a relay since the mosfets are good up to 30v3. The specs say 15 amps. I'm hesitant to go higher than 10 amps continuous. The mosfets are small and the terminal strip probably will get too hot at 15 amps and melt.4. Typical mosfet switching in this kind of application is done by connecting and disconnecting from ground instead of +V. This may or may not be a problem for your application.5. A small relay on the output would add very little cost and be a much better option since it would be electrically isolated from the timer and work with DC or AC current.For low voltage 5-30v DC and lower current (10 amps or less) and you don't care if you are switching off ground instead of +V, then this timer is pretty useful as is. For any other use, you really need an external relay.

they are a pain to assemble, getting the paper off all the little plastic parts. But they work well and are easy to use.

The product came with no manual or instructions of any kind. After requesting programming instructions from the seller, I was emailed some. Then I had to ask for assembly instructions which were then sent. Then It wouldn't work as the instructions stated. I contacted the seller and was told that my settings wouldn't work that I had to change a couple of things. No where in any paperwork received did it say the settings had to be programmed as such. I then asked for a "complete" manual and was told there isn't one. Don'[t buy this product!