1. Executive standard: GB4715-2005
           2. Operating voltage: 24V (pulse modulation)
           3. Operating current: < 300uA (monitoring status) or < 1.5mA (alarm status)
           4. Work indication: The red indicator will blink in the monitoring status or remain lit in the alarm status.
           5. Weight: about 70g
           6. External dimensions: diameter: 100mm, height: 55mm (with the base)
           7. Wiring method: non-polarity two-bus system (L1, L2)
           8. Operating environment: Indoor, temperature: -10°C~+55°C; relative humidity: ≤95% (40°C±2°C, without condensation)
           9.  Coding mode: It can realize electronic coding via coder in situ. Address codes 1 to 324 are available for selection.
         10.  Installation height: ≤12m
          11.  Protection area: about 60m2. For details, see related provisions in GB50116-98 Code for Design of Automatic

               Fire Alarm System
               Matched host machine: fire alarm control panel (such as AW-AFP2188)