（1）Receives alarm signals from non-coded fire detector (line-type laser beam smoke & fire detector, line-type heat fire detector, spot-type infrared/UV flame detector etc.) and non-coded fire hydrant push button; it can be jointly attached to intrinsic-safety-type fire detector, manual alarm and fire hydrant together with Zenner safety barrier for the application in places of explosion and fire proof detection.
（2）Detects the status of non-coded fire detector (normal, shut-off, fire alarm) and shut-off issue of DC24V power supply. It transmits reducible DC24V power supply for non-coded fire detector to use, and it is equipped with “fire alarm” indicator which directly demonstrates the statuses of routing inspection and alarm.
.Electronically encoded with only one ID; online addressing by controller or addressing by encoder; automatic log-in, convenient installation and debugging.
.A CPU and smart software are built in, high smartness level; non-polarized four-wire system, convenient wiring, good-looking appearance, and suitable to DH86 junction box.
· Working temperature: －10℃ ～ +50 ℃
· Bus working voltage: 24V Pulsating voltage
· Working humidity: ≤95% RH (No condensation of moisture)· 24V power supply: DC 24V±1015%
· Standby current: ＜1.5mA (bus)
· Alarming current: ＜2.0mA (bus)
· Alarm indicating lamp: Red, flickers during routing inspection, keeps lighting during alarming
· Wiring system: Two-wire bus (non-polarized), DC 24V power supply (non-polarized)
· Bus length: ≤2000m
· Load resistance: 1/4W 3kW (red sleeve)
· Protection level of casing: IP30
