Home Anti-Theft Anti-Burglar Security Alarm 

• Main specifications: length 6cm, width 3cm, height 2cm
• Accessories specifications: length 5.4cm width 1.3cm height 1.1cm
• Siren loudness: 90 decibels
• Power supply: 3×1.5V LR44 button battery (installed in the host, normal use time can reach one year)