Features:

  • DROK timer relay operating voltage range is DC 6-30V, support micro USB 5.0 V power supply; support high level trigger 3.0v-34v and low level trigger 0v-0.2v; timing range is 0.01s~9999mins, can be continuously adjustable.
  • LCD Display: the timer delay relay module is designed with LCD display, can clearly and directly show the current mode and parameters.
  • Sleep Mode: without any operation within 5 minutes, the LCD backlight of the relay board will close automatically. Any button can wake up.
  • Independent Parameters: OP/CL/LOP parameters can be modified and saved, and they are individual.
  • Auto Save: All setting parameters are automatically saved by power-fail.
Works well!

Tried many. This relay is superb!

This board fit our needs better than expected!!!

As part of my daily routine, I develop test fixtures that can put the products and components through their paces. For my latest build, I needed to have a mechanism that would be able to cycle an air pump roughly 50 seconds and be off for 10. Most relays are designed to have an adjustable timing are limited in as the on and off times are equal. In addition, they do not allow for setting a desired number of cycles that I needed. The DROK delay does all of that... After purchasing 2 of them, I set one up in my tester for 50 cycles to verify feasibility and it performed exceptionally well. After a few more test the team decided this would work perfectly for the test. The next testing will be 2 series of approximately 6,500 cycles. Actually, they liked the system so much that we have ordered additional boards for all of our cyclic testing. The only drawbacks I have with the DROK is the cycle limitation of 9999 cycles (I actually need to test to 1300 cycles) and the 5A limit of the unit. Other that that, the DROK appears to be a great product for the money and if all my testing goes well, I will be more than happy to recommend to others looking for a low cost cyclic delay. Great Job!!

Does exactly what its supposed to.

Works perfectly. Easy. Use it to open valve to keep a rain water tank partly full when it's not raining. The trigger is the key. Keeps the float switch from turning valve off & on repeatedly from the waves created by the water stream in the tank. Once on it just stays on for the set amount of time no matter how many times the trigger pulse is activated by the float switch...then trigger will work again next time its activated.

works excellent

timer works perfectly many functions bright clear display customer service is top notch

Functional and simple to program.

Easy to program regardless of some translation errors in the instructions. So far the relay has been working in mode 6 switching AC and DC power to colling fans using the timer every 100 seconds. I'm using a separate USB adapter to power the DROK separately. I've also added a parallel capacitor to the load to ensure the DROK is protected from inductive kickback.

Works great as a float switch controller.

I have a small pump that empties a collection tank. I installed a simple float switch but the tank is small enough that the water level rises enough from the backflow created when the pump turns off. I installed a check valve on the line which made it better but still have this constant on off operation of the pump. Not good for the pump and not achieving anything. I installed the DROK Time Delay Relay controller and was initially disappointed because the program modes all require the switch to turn off to reset the timing cycle. This means if the water level is above the float switch, the delay will shut the pump off and wait for the trigger again. This will never occur because the water level is above the switch. One solution is to make the delay long enough to make sure the water gets below the switch, but that means it can run dry. This is bad for the pump as well. The explanation of the program modes are somewhat confusing especially program mode 7. It didn't seem to describe what I needed it to do but it does exactly what I need it to do. I have the time delay set to 2 seconds. If the switch is still triggered at the end of the delay, it keeps the relay open and the pump stays on. So now it continues to run until the water level drops far enough that the backflow from the pump doesn't trigger the switch, but not so long as to drain the tank so the pump runs dry and loses its prime. It is cheap and covers all the safety conditions. I now own several DROK components and all seem to be very reliable. It is now my go to brand choice.

Display makes the settings very easy

I was looking for a triggerable & programmable relay and this one has several functions, just not the one I was looking for. I asked if it could be programmed for an On then Off period that was initiated by the trigger, and run the complete cycle before it would accept another trigger signal. One of the answers I got from the community said it would do this but it doesn't. I'm going to keep it anyway for another project and keep looking.

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