Type:AHH-3 1.Wiring system: nonpolar 2 BUS 2. Working voltage: 15-32V BUS pulse 3. Working current: standby current: 0.3mA; working current: 1mA 4,Operating environment: temperature: -10℃～+50℃ Relative humidity 95%(uncondensed） 5.Alarm indicator: red 6.Coding scheme: electronic encoder, with a code range of 1～200 7.shell material and color: ABS cream-coloured 8.carried standard: GB 4716-2005