Specifications:

• Working environment: -10~+50( less than 95%RH No congelation)
• Type: Smoke Detector
• Sound level: 85dB/3m
• Product Name: Photoelectric Smoke and Heat Alarm Detector
• Operating voltage: DC9V battery
• Model Number: HM-620DHS
• Installation: Wall or Ceiling mounted
• Dimension: 128*38mm
• Alarm temperature: 57 degree Celsius