You need to enable Javascript in your browser to use most features on our website.
Model No. SR-820DHS Operating voltage 9V battery Interconnection N/A Alarm temperature 57 Sensitivity 2.06%ft±1.3%ft Sound level 85dB/3m Installation Wall or Ceiling mounted Working environment -10~+50(â?¤95%RH No congelation) Dimension 128*38mm