ATJ-EN Hochiki ESP Analogue Heat Sensor (Ivory or White)


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    ATJ-EN Hochiki ESP Analogue Heat Sensor (Ivory or White)

    The ATJ-EN incorporates a variable temperature heat element and a rate of rise heat element, both of which are controlled from the Control Panel, allowing either thermal element or both elements simultaneously to be active in making the fire decision. The sensor polling LEDs can also be controlled via the Control Panel (pulsing/non-pulsing).


    • User selectable modes
    • Incorporates Fixed Temperature and Rate of Rise Heat elements
    • Twin LEDs allow 360 degree viewing - green when polling, turn red in fire
    • Pulsing/non-pulsing controlled from panel
    • Electronically addressed
    • LPCB & VdS approved to Classes A, B & C
    • SIL Level 2 approved variants available
    • Available in white
    • 93g

    Frequently Asked Questions

    When replacing an existing ACB–E heat with this ALN-EN, will my system need to be re-programmed?

    It depends if the panel in question doesn’t support the new device type then the panel will not need any programming and the new device will be seen with the old product code.

    However if the panel supports the new device types, then you will get a wrong device type when they are sapped over, depending on panel type this will just need an auto learn of the loop to correct.


    • Ordering Code : ATJ-EN ATJ-EN(WHT
    • Operating Voltage : 17 – 41 V d.c.
    • Low Power Mode (typ) : 110 A
    • Quiescent Current (typ) : 350 A
    • Alarm Current (controlled by CIE) : 9.1 mA (excluding remote indicator)
    • Transmission Method : Digital Communications Using ESP
    • Operating Temperature Range : -10 °C to +50 °C
    • Operating Humidity : 95% RH - Non Condensing (at 40°C)
    • Storage Temperature Range : -30 °C to +60 °C
    • Storage Humidity : <80% RH at 70 °C
    • Colour / Case Material : Ivory or White / Polycarbonate
    • Weight (g) : 90
    • Diameter (mm) / Height (mm) : 100 / 45
    • Compatible Bases :
      • YBN-R/3
      • YBO-R/SCI
      • YBO-BS
      • YBO-BSB
      • YBN-R/3(SCI)
    • Base Fixing Centres (mm) : 48 ~ 74
    • Approvals : LPCB & VdS approved to Classes A1, B & C


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