Delay Relay Board, DC 12V Delay Turn Off Switch Module with Timer,Relay Delay for Smart Home Tachograph GPS Industrial Control Electronic Experiment Robot,

The product works as described, it’s nice small package but a bit crowded. I use these in training simulators by the dozens. If this is the first time you use this you should know: 1) There is no schematic or wiring diagram. It’s not that difficult to figure out the wiring. However, there are several “jumpered pins” within description. 2): The silk screening is very poor and you really need to know what is says to read what it says. 3): I would give the product 5+ if I could but I won’t because the package does not include a pigtail for the trigger pins. You’re on you own for that so you might scratch your head for a while. Very reliable.

I purchased the Delay Relay Board to augment my solar-powered pond aerator system, and I must say, it has been a game-changer. This module works flawlessly in controlling the on/off cycles of the aerator, optimizing its operation during specific times.The setup was relatively simple, thanks to clear instructions provided with the product. Once installed, the timer function worked exactly as described. I appreciate the versatility of the timer settings, allowing me to customize the duration and frequency of the aerator's operation to suit my pond's needs.The reliability of this relay board is commendable. It consistently turns the aerator on and off at the designated intervals without any glitches or deviations from the set schedule. The 12V DC compatibility was perfect for my solar-powered setup, seamlessly integrating into the system without any compatibility issues.

There was no wiring diagram or instructions so I thought I would save others time and create one.

This relay delay works great! Great price!Bought the 5 & 12 Volt timer. The trigger is the 2 pins next to the power in connector. Use a normally open push button sw. Turn the pot ccw for minimum time on. Play with S1,S2 jumpers for time delay. S5 is for relay contact. Disconnect S5 to isolate relay contacts from 12 Volt DC power supply. Trigger circuit also uses a PC817C optical isolator.

Exactly what I wanted.. perfect size. Versatile for any project.

I would have given this a 5 star rating but the only thing you got was the relay. No wiring diagram to show how it should be hooked up. Did order a couple more once all the wiring was figured out.

It works great!