Hochiki YBO-BS Addressable Base Sounder (Ivory or White)


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    Hochiki YBO-BS Addressable Base Sounder (Ivory or White)

    Model YBO-BS is an addressable loop powered Base Sounder innovatively designed to give a range of tones and volumes with a maximum output of up to 98 dB(A) (±2 dB(A)) with low current consumption. The unit is designed to fit to the Standard Base (YBN-R/3) or the Isolator Base (YBO-R/SCI – from Batch Number 6044) and can be fitted with any of the ESP Range of Sensors, Beacons or Remote Indicators.

    The unit can also be converted into a wall sounder with the simple addition of a Cap (SI/CAP). The sounder is Ingress Protection rated to IP21 and for internal use only.

    An Auto-Shutdown feature allows the user to set a fixed time within which the sounder will operate, before automatically silencing itself, cutting noise pollution (dependant on control panel compatibility).


    • Loop Powered with Single Loop Address - addressed automatically by Control Panel or via the TCH-B100 Hand Held Programmer
    • Variable Sound Output 50 ~ 98 dB(A) (+/-2 dB(A)) output at 1 metre
    • Fits Hochiki Standard or Isolator Base and supports ESP Sensors, Addressable Beacons and Addressable Remote Indicator
    • 51 User-Selectable Tones (all tones EN54-3 compatible)
    • Auto-Shutdown feature prevents noise-pollution
    • Approved by LPCB & VdS
    • Available in Ivory or White


    • Ordering Code : YBO-BS YBO-BS(WHT)
    • Operating Voltage : 17 – 41 V dc
    • Low Power Mode (typ) : 40 A
    • Quiescent Current (typ) : 150 A
    • Sounding Current (typ) : 0.8 mA (50 dB(A) @ 1 m) ~ 16 mA (98 dB(A) @ 1 m)
    • Sound Output (at 1 metre) : 50 ~ 98 dB(A) (±2 dB(A)) @ 24 VDC or above (EN54-3 compliant)
    • Number of Tones : 51
    • Tone Frequency Range : 300 Hz ~ 2850 Hz
    • Operating Temperature Range : -10°C to +50°C
    • Storage Temperature Range : -30°C to +70°C
    • Maximum Humidity : 95%RH - Non Condensing (at 40°C)
    • Colour / Case Material : Ivory or white / PC+PS+GF5
    • Ingress Protection Rating : IP21
    • Weight (g) : 112
    • Dimensions (mm) : H113 x W113 x D43
    • Base Fixing Centres (mm) : 48 ~ 74


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