Perfect for bedrooms, dorm rooms, apartments and hotels.
- Extremely loud - 120 dB, audible up to 1,000 feet (300M) away
- Triple purpose: wakes you, alerts others and prevents door from opening with a non-skid pad
- Useful in various applications - ideal for bedrooms, hotels, apartments & dorm rooms
- Lets you know when battery is running low with indicator
- Includes on/off switch
- Requires 1x9V battery (not included)