Main power supply AC 220V (+10%~-15%) ，50HZ
Back-up power supply DC 24V，4AH（built-in） work consumption Supervising status：≤3W；alarm status：≤10W (all 25 units fire detectors are in fire alarm status) Basic supervise capacity 2 loops，250 addressable points per loop； External control unit 5 pieces
External control unit contact capacity DC 30V，1A. Polling cycle ≤10 seconds（single point continuous searching in abnormal situation） Signal transmission distance ≤1000 m（RVS-2×1.0mm2）；≤1500 m（RVS-2×1.5mm2）； Alarm line wiring method 2-wire bus
Voltage in alarm bus 24V (18V~26V) Operation temperature 0℃~55℃ Relative humidity ≤95%
Black box record number Be able to keep latest 999 pieces records, including opening machine, close machine, reset, fire alarm, supervising, associated operation and fault alarm).
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