Timer Delay Relay On Off Timer Module

This is a great timer module that is very flexible for many hobby uses. This seller shares very good programming guides so you can actually program the module for your hobby project. I appreciate the fact that this seller does not leave you twisting in the wind with no instruction on how to program and use. The enclosure is very sturdy and has openings for wires and screwdriver for tighening wire clamps for a good connection. I've seen comments that the enclosure is not necessary, but I found the enclosure both necessary and extremely sturdy. This is my first purchase of this module, but I'm likely to purchase this again for future projects. My current project is to recycle condensed water in a mushroom growing chamber. As condensed water drains into a contrainer, this module is triggered by a float switch which activates a water pump to empty the container to recycle the water. Once activated by the float switch, I can keep the pump running for the exact period of time necessarry to evacuate water from the container. This module give me precise control over the length of time the pump is activated. This modude is perfect for my use and for many other applications involving triggering and timing. I wired this according to diagram using only ONE power source. No need for more than one power source. It works perfectly with ONE power adapter delivering 12 volts. i rate this product a BUY !!!

Pros :Unbeatable price for the multiple features/settings it offers. Compact. Clean look. Have used it everyday for months and still works as new. Acrylic case makes easy to rig addig perforations to run additional wires and push buttons onto the housing. Cons: Instructions seem to be translated from Chinese to English, which makes it really hard to understand. It should be reviewed by an american to makes sure is easily understood by english spoken people.

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 application 1. 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 30v 3. 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.

The board has all sorts of different ways to configure it that makes it very flexible. It was exactly what I was looking for. A bit difficult to understand the instructions, but this is typical of Chinese translations. Bench test it first and you can soon figure it out and it retains the settings so you can set it up before you put it into place. My only complaint is the contacts for connecting the wires are a bit small and close together which makes it difficult to fit larger gauge wire. I like that they include a simple case for the board. Mine fit together perfectly.

No instructions included. How hard is it to print a QR code or something? I only received the circuit board and a collection of plastic pieces and screws. After assembling, then locating the instructions, there is still no wiring diagram. This is NOT SUITABLE FOR AUTOMOTIVE USE. A fact which would have been readily apparent had the seller or manufacturer included even the most rudimentary wiring diagram. The reason this isn't suitable for automotive use it that it doesn't shut down the + circuit, only the ground. Since cars have a common ground you can't interrupt the circuit of any component that uses a chassis ground, which is almost all of them. Pretty frustrating to spend an hour and a half under my dash wiring this thing to find that it leaves the positive side of the circuit hot 24/7.

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.

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.

It works but some programing instructions would be nice.