Guide to install professional security systems

DIY home security easy with video guidance. MD-313R is focus brand meian technology company manufactured wireless siren strobe. It has red or blue color for option. Its appearance is elegant and simple. It uses battery power and has 3 keys to enroll code, clear code and mute it. MD-313R is a droplet type siren strobe and installed on wall with bracket. Through the app, we can enroll it to the alarm system easy. It is 2-way communication siren strobe and can be enrolled to remote control, alarm panel for sound light alarm at site. On this video, you can learn how to start using MD-313R for home and business security. More technical support can be found at