Arduino - Panic Alarm, Relay With ALARM. KY-019 Example

Hello world! Today i made an example on the KY_019 Relay module.

In my video i use a Alarm with strobe attached to it, but the strobe is not working because i use a 9volt battery,

and the alarm is 12v. Anyways... it works, and its very simple to build.

Follow the next step for the schematic code & Parts list.

Parts List.

1. Arduino uno, I used a clone, the RobotDyn uno as i always do. Very good one with 7 analog pins.
2. KY-019 1 Channel relay
3. KY-004 Button Module. (You can use another button to of course!)
4. Alarm strobe (aliexpress) + a power source 12v Adapter for example.
5. Jumper wires. MM/FF/MF

Good luck!