Battery 3V CR-2450 lithium cell for smoke detectors type FIT-128C, KD-128C, MTS-166S/5Y and MTS-166/5Y.

Procedure replacement batteries:

1. Remove the old battery cells
2. Push a few seconds the test button to remove old power inside the alarm
3. Clean the smoke alarm with your vacuum cleaner
4. Place the new battery cells into the smoke alarm
5. Push the test button firmly, you will hear a long loud “beep“ tone
6. Your smoke alarm is again ready for functioning

Attention: Clean your smoke alarm fortnightly with your vacuum cleaner, without removing the smoke alarm from the sealing