Details

HM-890B Smoke Alarm 
This smoke alarm is used for real-time monitoring of smoke concentration and prevention of fire hazards. 
It is suitable for various scenarios such as households, offices and commercial shops. During installation, 
fix it at the center of the ceiling, away from air vents and steam sources. Install batteries as required, 
and it will enter operation after passing self-test successfully. 

Specifications
• Working Voltage: 220V–240V AC power supply, equipped with a 9V alkaline backup battery 
• Service Life: 10-year smoke alarm 
• Applicable Standard: EN14604 
• Alarm Sound Pressure: 85 dB at 3 meters 
• AC Standby Current: ≤100 mA 
• AC Alarm Current: ≤100 mA 
• DC Standby Current: ≤35 mA 
• Service Life: Over 10 years 
• Mute Function: Approximately 8 minutes 
• Equipped with automatic sensitivity adjustment function, suitable for long-term stable use.