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GS
Reviewed in the United States on January 13, 2025
Completely didn't work.
Julie M
Reviewed in Canada on January 10, 2025
The relay energizes immediately on trigger closure but timer delays the relay drop-out by your defined time when the trigger sensor opens. The delay timer doesn't begin until the trigger contact opens and if the trigger contact re-closes before your delay time is reached the timer resets to zero and the relay remains energized the entire time.My application was to de-chatter a pressure sensor contact. I only wanted to detect if the pressure sensor opened for longer than 2 seconds. Adjusting the trim pot for a 2 second delay and wiring the pressure sensor to be the timer board's trigger contact and wiring the board's NO relay contact to where the pressure sensor would normally be connected now filters out any opening of the pressure sensor that's less than two seconds. If the pressure sensor opens for more than 2 seconds the relay drops out. Any trigger contact opening for less than 2 seconds is ignored.
Customer
Reviewed in the United States on August 3, 2024
It seems to work overall except the potentiometer adjustment just doesn't work. I tried moving it around, and you pretty much get 5 seconds or "always on." Moving the potentiometer adjustment just throws it for a loop and it just never times out.I will likely still use it, but I wish the adjustment was a bit more precise.
bert8098
Reviewed in the United States on March 2, 2024
Nice 555 timer circuit.
Customer
Reviewed in the United States on January 23, 2024
This nicely made small timer module fit well in my application, a very simple one that requires a timed relay closure when power is first applied. Board markings are rather oddly in Chinese, but the published data helps with that. Recommended.
Terry Brux
Reviewed in the United States on January 22, 2024
This item comes with no documentation, instructions or directions of any kind. Use or connection is at the risk of destruction of your device.
James Taylor
Reviewed in the United States on July 29, 2023
Works as described.
Holger
Reviewed in Canada on June 29, 2023
Using it to run crossing signal flashers on a model train layout.
RWS
Reviewed in the United States on November 30, 2023
It worked as expected as soon as power was connected. One drawback - in the instructions it says you can change the timing capacitor to change the delay range. Theoretically that's true, but when I tried unsolder the existing capacitor, the via barrel pulled out. For the ordinary user, that would have been the end of the board, but I able to put in my new capacitor and add a wire to make the connection the via barrel used to make. That's my only gripe. It's got a nice relay that looks like it can handle a substantial electrical load.
Richard H.
Reviewed in Canada on January 27, 2023
used for a delay curcuit on an linear actuator
Devin L.
Reviewed in the United States on April 10, 2021
The module works as listed. Which is not actually what I want on one aspect. I overlooked the detail that the relay energizes when power is supplied to the module. Then reverts back to neutral configuration on the relay till it is triggered again. The form factor is just what I needed but because of this little startup issue I am unable to use it for this project.
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