Hello, I always fascinated about fire alarms and security and life safety systems. You can see my fire alarm and security alarm videos on my Youtube channel.

My two Youtube channels: https://www.youtube.com/@EYL8902 & https://www.youtube.com/@EYL8902secondchannel

My Instagram: https://www.instagram.com/officialeyl8902/

My Discord server, if you want to be on a system test video as a guest: https://discord.gg/AHD3A4QctY