Detects window vibration, instantly alerts you of a potential break in with loud 100 dB alarm

Unique ultra-slim design, perfect for any window (including sliding windows) in your home, office, garage, dorm room, or even RV

Vibration trigger technology, built-in vibration sensor perfectly tuned, will not go off in rain, wind, etc. No false alarms

Superior adhesive backing for optimum sticking power

Includes 3 x lr44/ag13 button cell batteries