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Two-wire, non-polar, maximum communication distance 3000m, with self-diagnosis, pollution automatic compensation, fixed temperature and ROR alarm function, real-time output temperature value.
Heat Detector
Product Features
•  SMT processing, embedded Crested Ibis chip.
•  Collect, store, analyze and determine data by itself.
•  Resists effect from electromagnetic interference, dust, temperature variation, erosion, and outside light.
•  Damp heat resistance and water-proof processing.
•  A2R type: fix temperature alarm and rate-of-rise alarm.
•  Glass sealed temperature sensitive resistor gives quick alarm.
•  Real time temperature monitoring. Query temperature curve on the control panel.
•  Two-wire polarity-free loop.
•  Communication distance: 1500m

Technical data
ItemsTechnical Parameters
Working voltageDC18V-27Vmodulation type provided by the control panel
WiringSignal line: L1, L2
Working temperature-10~+50℃
Storage temperature-20~+55℃
Relative humidity≤95%(40±2℃)
Monitoring current≤0.3mA(24V)
Alarm current≤1mA(24V)
RF susceptibility (immunity)30V/M
IndicatorFlashes when in normal monitoring, steady on when alarms;
Addressing methodElectrical encoder
Address range1-200
Protective area20-30m2
Communication distance1500m
Applied standardGB 4716-2005 “Point Type Heat Fire Detector”
Structure and Installation
1) Fix the probe base JBF-VB4301B on the embedded box with two M4 screws.
2) Use a special electronic encoder to set the address (1-200) for the detector.
3) Adopt ZR-RVS-2×1.5mmtwisted pair cable, and the two-wire bus in the loop connect to the terminals L1 and L2, regardless of polarity.
4) Mount the detector onto the base and tighten it clockwise. The installation should be done with gloves on to keep the detector clean.

Structure and installation dimensions:

Installation diagram


•  The installation should be carried out with gloves on to keep the detector clean.
•  After installation, do not remove the dust cover if the environment is not settled.
•  Conduct smoke test regularly, ideally every six months.