5V-30V trigger delay relay module timer module / delay switch

Product Features
By adjusting the potentiometer can set the length of time, the relay has freewheeling protection
MicroUSB 5.0V power supply with input port, easy to use
5 ~ 30V wide supply voltage external signal trigger and key trigger in two ways
With relay indicator anti-interference ability, all kinds of interference relay will not malfunction, suitable for industrial control
Size: 5.5 * 2 * 1.8cm / 2.16 * 0.78 * 0.7 ""
product description
feature:
1. Operating voltage: wide voltage 5 ~ 30V, two power connector
2. Operating modes: Initial state, module output: Normally open (NO) and common terminal (COM) open, Normal close (NC) and common terminal (COM) provide low pulse or touch trigger, relay and indicator Status output: Normally open (NO) and Normal (COM) connections, Normally closed (NC) and Common (COM) terminals open. 0-24 seconds (at this time can be adjusted as needed) relay off, back to the pre-trigger state
3. Potentiometer adjust the length of time, the default 0-24 seconds. If you need more time, replace the larger capacitor (C2) or potentiometer. Delay time T = 1.1RC. For example: 22uf capacitance and resistance 1M, T = 1.1 * 0.000022 * 1000000 = 24.2 seconds
4. Module controllable: 10A / 250VAC, 10A / 30VDC load
5 trigger signal input design and pull the filter circuit to enhance anti-interference ability, suitable for industrial control. Many manufacturers increase the optocoupler isolation, but there is no separation between the module ground and the signal ground, will not achieve the interference effect. After testing, we found that only by improving the stability of the signal input port for interference, whether the module is in an electromagnetic interference environment or not, the relay will not malfunction during the power-on and power-off periods
application:
1. Anti-theft, alarm, building delay switch, sound and light control switch
2. Delay power vehicle equipment to prevent the car from generating high current when starting to burn vehicle equipment
3. Prevent multiple devices from starting at the same time, causing burning devices or failing to start