WZYuan Home Safety Security Wireless Door Window Magnetic Sensor Mini Entry Alarm System (White, Pack of 6pcs)
This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases Sensor type: alarm Alarm type: sound (Super loud 90 dB alarm) Magnetic sensor switch detects entry protecting your home or office. Product Features Size: 6.2cm x 3.2cm x 2cm Operated by 3pcs of 1. 5V LR44 / AG 13 button cell