- Wireless interlink technology to connect up to 20 units
- Built-in tamper-proof 10 year lithium battery
- Extremely loud warning tone
- Large hush/test button
- 10 year warranty
This photoelectric alarm features the Arma Intelligent Wireless Interlink Technology which allows up to 20 units to be wirelessly linked to protect the whole household. When one alarm activates, the entire network activates. Suitable for living areas, hallways and bedrooms.