Features:
- 4.3"Dia. x 1.5"H
- Test button
- Hinged battery cover for easy battery replacement
- Battery exclusion feature - cover will not close if battery is not properly installed
- Audible low battery indicator
- Includes 9V battery
- ETL listed to ANSI/UL217 standard
- 3 year limited warranty
- Item restricted in OR and VT due to legislation