1.  Executive standard: GB4716-2005
                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 47g
                6.   Product class: A2
                7.   External dimensions: diameter: 100mm, height: 56mm (with the base)
                8.   Wiring method: non-polarity two-bus system (L1, L2)
                9.   Operating environment: Indoor, temperature: -10°C~+50°C; relative humidity: ≤95% (40°C±2°C,

                      without condensation)
              10. Coding mode: It can realize electronic coding via coder in situ. Address codes 1 to 324 are available for selection.
              11. Installation height: ≤8m
              12. Protection area: about 60m2. For details, see related provisions in GB50116-98 Code for Design of Automatic

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