Perancangan Prototipe Alarm Keamanan Pada Pintu Rumah Menggunakan Relay

ABSTRACT Prototype of Security Alarm on Home Doors Using Relays, this tool is made to strengthen security in homes and private places that we want to protect, crimes that often occur, both personal factors due to negligence in locking the house and there are also factors that are done by the crime Therefore, this prototype is designed in such a way as to prevent and reduce crime. This tool…