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Your cart is empty. Features:
1. Working voltage:wide voltage 5 ~ 30V, With a relay indicator.
2. Operating mode:the initial state, module outputs: normally open (NO) and the common terminal (COM) is disconnected, normally closed (NC) and the common terminal (COM) connected. Providing a low pulse signal, or touch trigger key, relay and indicator lights, the output of the state: normally open (NO) and Common (COM) connected, normally closed (NC) and the common terminal (COM) is disconnected. After 0-24 seconds (this time can be adjusted according to your needs) relay off, back to the state before the trigger.
3.The length of timing adjustment by potentiometer, default 0-24 seconds. If you need more time, you can replace the larger capacitor (C2) or potentiometer. Delay time T = 1.1RC. For example: 22uf capacitor and resistor 1M, then T = 1.1 * 0.000022 * 1000000 = 24.2 seconds.
4. The module can control: 10A / 250VAC, 10A / 30VDC load.
5. The relay has a freewheeling protection.
6. Trigger signal input terminal is designed with a pull and filter circuit, enhanced anti-jamming capability, suitable for industrial control. Many manufacturers add the optocoupler isolation, but there is no separation between module's ground and signal's ground, would not achieve the interference effect. After the test found that only enhance the stability of the signal input port to interference, regardless of this module is under electromagnetic interference environment, or in the power-up and power-down moment, the relay will not produce misoperation .
7. Dimensions: 5.4 * 1.9 * 1.8cm (L * W * H)
Applications:
1. Burglar, alarm, building delay switch, sound and light control light switch.
2. Delay powered vehicle equipment, to prevent large currents generated as the car starts burning vehicle equipment.
Package included:
2* 5V -30V Delay Time Relay Control Switch Module
bbright
August 5, 2025
I used this to cycle a closet light LED.As previously described the solder terminals for power and trigger are very small but I had no difficulty with this connection - just make sure you have a good tip on your iron.The time adjustment was as described up to about 25 seconds and was very reliable.The relay is NO or NC and rated to 10 amps.Trigger is as easy as trigger solder spot to ground.It is very small and easily fit in a shallow outlet box.Overall as long as this unit does not fail I am extremely happy and the cost was super cheap.Highly recommended!
Rob
August 3, 2025
I powered it up with 5 VDC through the micro connector on the board. It works exactly as described. I like that fact that it requires a negative going trigger that is accessible from a pad on the circuit board. To trigger the delay, one need only bring the trigger terminal to ground to begin the delay. The delay may also be triggered by depressing and releasing the small push button switch on the PC board. The time delay is easy to adjust with the onboard potentiometer. Trigger Behavior: a) If the trigger is held for a period shorter than the set delay, the relay will hold for the remainder of the delay after the trigger is released. In other words, the delay begins the instant the trigger is grounded. b) If the trigger is held for a period longer than the set delay, the relay will hold until the trigger is released, and the relay will open immediately and without further delay. I tried grounding the trigger terminal with a 1N5711 diode and the delay would not trigger. One might infer that the forward voltage drop of the diode
Uncle James
July 29, 2025
My rear defogger stopped working, car control module obsolete, I added this to run it, used the existing relay for the defogger circuit in my '99 Taurus.
GraniteDon
July 11, 2025
First board did not work correctly - connecting the trigger would turn on the LED and relay, but removing the trigger simply turned off the LED and relay immediately, no matter where the trimpot was set. Same action pressing the button on the board. No time delay action.Second board: Applied power, actuated the trigger input and nothing happened. Tried the push button, also no action. Adjusted the trim pot, made no difference. After a few minutes, smoke came from the board, and I gave up.In my experience, this product is pure junk. It isn't even worth my time to ask for a return or refund. I recommend you don't buy this product. Unfortunately I can't give this product zero stars. It isn't even worth 1 star.
T. Gehman
June 19, 2025
In my testing, this only works with a momentary trigger input. If the trigger is held indefinitely (or longer than the set time), the relay will remain active until the trigger signal is removed, thus overriding the timer completely. No mention of this in the description. This majorly limits the applications for this unit, and is unsuitable for what I needed.
Elec/CS engineer
January 15, 2025
They work as advertised and have a high build quality (like most all of these Chinese modules). For the price, I can't complain but a couple of little things. My biggest program is that the three solder pads are not at the standard .1" spacing. (You have to use the pads if you want to use other than 5V). This means you can't just insert a three terminal screw terminal. I was able to solder on e in by bending the pins. They saved a little money, so OK, but they should have been at .1" spacing (or provide) a screw terminal (and skip the push button since I am not sure the purpose since it just pulls the trigger pad to ground. There is also no "power on" led, just an led while it is running the delay. All other similar boards have a red led for power and a green led when the module is running. I will likely add an led across the input power pads so I know it's on and waiting for a trigger (and not dead). Lastly, I understand why most all of these boards use a negative trigger since that is the easiest with a 555, but it would be nice to have a positive trigger option. Having high and low triggers would be unique for just another transistor and a couple of resistors.
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