Main Features:

1. Photoelectric technology is generally more steady than ionization technology at detecting large particles, which tend to be produced in greater quantity by smoldering fire, which may smolder for hours before bursting into flame
   

2. Sources of these fires may include cigarettes
   

3. The unit monitors, air and when smoke reaches its sensing chamber, it alarms
   

4. It can give you more time to escape before fire spreads
   

5. This unit can only give an early warning of developing fires if it is installed, maintained and located where smoke can reach it and where all residents can hear it, as described in this manual
   

6. This unit will not sense gas, heat or flame
   

7. It cannot prevent or extinguish fires
   

8. The alarm shall include a test button that will electronically simulate the presence of smoke and cause the unit to go into alarm
   

9. This sequence tests the units electronics, battery and horn to ensure proper operating
   

10. The unit shall include a piezoelectric horn that is rated at 85 decibels at 10ft
    

11. In a smoke incident, the horn will sound in the repetitive manner, three beeps, a pause, three beeps, a pause
    

12. The unit shall also include a low-battery warning utilizing a brief alarm chirp every 30 to 40 seconds for a minimum of seven days
    

13. The alarm will utilize a red LED that shall flash once every 30 to 40 seconds to indicate the alarm is receiving pow 

     

Specifications:

Certificate Standard: CE  View scanned certification Certificate Number: HTT2130911017LR-1 Issue Date: Sep.11.2013 Issued By: HTT Compliance Testing Laboratory Expiry Date: Sep.11.2999

Certificate Standard: ROHS Certificate Number: HTT2130911017RR-1 Issue Date: Sep.11.2013 Issued By: HTT. Test Compliance Service Co., Ltd. Expiry Date: Sep.11.2999 Scope/Range: Smoke Alarm for DP-422R