Place of Origin: Guangdong, China (Mainland) Brand Name: SUMRING Model Number: SR-820PHS COLOR: whitePower: 9V BatteryAlarm output: sound and flash alarm Photoelectric sensing technology: yes Sending frequency: N/ASensitivity: 2.06%ft±1.3%ft Sound level: 85dB/3m Installation: Wall or Ceiling mountedDimension: 128*38mm
