- with bi-sensor technology (smoke + heat)
- 12 years battery life (lithium)
- built in battery
- displays if battery empty
- alarm signal 85 dB
- with a large test button
- cyclic genuine self-test function
- 5 years warranty
- Including 9 V and 1,5 V battery
- more safety
- fits to bedroom without LED
- magnetic plate is included
