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Two-wire, non-polar, maximum communication distance 1500m, acoustic alarm function, temperature sensor with epoxy resin package, fast temperature response.
Heat Alarm
JBF4112 is an intelligent fire detector with a high precision thermistor as sensor.
When the temperature parameter reaches the threshold, the detector will send out sound and light alarm signals and fire alarm signals to the fire alarm control panel. The product is widely used in all kinds of residential buildings: living room, bedroom, etc. Meet the national standard: GB 22370-2008 “Fire Safety System for Household” and GB 4716-2006 “Point Heat Fire Detector”

Product Features
•  Embedded microprocessor, collect, store, analyze and determine data by itself.
•  Fixed temperature and rate-of-rise alarm
•  With sound alarm function. In the condition of terminal voltage VDC≥22V, up to 32 detectors can alarm at the same time.
•  Using light guide column, good antistatic ability;
•  Epoxy resin package temperature sensitive resistor, temperature response speed is fast.
•  Output temperature fluctuation curve. The temperature rise curve can be viewed on the control panel.
•  High stability.
•  Strong resistance to dust adhesion, electromagnetic interference, corrosion and environmental temperature effect.

Technical Data
Working voltageDC24V(DC19V-DC28V)provided by control panel, modulation type.
Monitoring current<250uA(24V)
Alarm current≤6mA(24V)
IndicatorFlashes in monitoring state, constant on when alarms
Sound pressure levelInitial sound pressure is less than 45dB, gradually increases to 58dB
Working temperature-10…+55℃
Storage temperature-30…+75℃
Relative humidity≤93%(40±2℃)
DimensionsΦ100mm×41mm(with base)
Addressing methodUse special encoder
Protecting area20-30m2
WiringTwo-wire, no polarity

Structure and Dimensions
Installation diagram
Wiring diagram

Dust cover should be added when the detector is not in use for a long time.