Ultra thin design, can be installed to any door, window. High precision materials, never misinformation. Low voltage prompt, always protect the safety of you and your family.

Loud Alarm: The 125 DB security alarm is perfect for signaling to you when there is an unwanted entry. 

Wireless Design: No wiring is necessary and 3 x LR44 batteries are included in each device. 

Specifications:

• Type: Doorbells
• Size: 32*11.5*10mm
• Powered by: 3 x LR44 button battery
• Power Source: Battery
• Package Included: 3 x Alarms with tapes
• Doorbell Type: Wireless

What's in the Box:

1 x Magnetic Sensor Home Security Alarm