Hochiki YBO-BSB2 Addressable Base Sounder Beacon | Independent Sounder & Beacon Operation, Auto-Shutdown Feature
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Key features
- 51 user-selectable tones across 300-2850Hz
- Sounder and beacon operate independently
- Converts to wall-mount with simple cap
Downloads
Summary
The YBO-BSB2 is an addressable base sounder beacon built for commercial fire alarm installs, offering 51 user-selectable tones and a sound output adjustable from 50 to 98 dB(A) from a single device. Its sounder and beacon elements can be operated independently, giving you flexibility on sites with mixed notification needs that a fixed-tone unit can’t match.
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That flexibility means you can match the alert pattern to each zone without carrying multiple sounder variants on the van, cutting the number of SKUs you need to stock and specify. It also simplifies commissioning on sites where the fire strategy calls for visual-only or audible-only alerting in certain areas.
You fit the YBO-BSB2 to a Standard Base (YBN-R/3) or Isolator Base (YBN-R/3(SCI)), and the same base accepts ESP sensors, addressable beacons or remote indicators, so one base footprint covers several device types. Add the SI/CAP2 cap and the same unit converts to a wall-mounted sounder beacon, while the auto-shutdown feature lets you set a fixed run time to stop noise pollution once occupants have been alerted.
Features
- 51 user-selectable tones – match sound signalling to any site requirement without stocking multiple sounder variants
- Variable output 50-98 dB(A) – set volume on site to suit the space, compliant at 24VDC or above
- Independent sounder and beacon control – run the audible or visual element separately where the panel supports it
- Auto-shutdown feature – stops the sounder after a set time to cut noise pollution on site
- Fits standard or isolator base – the same base accepts ESP sensors, beacons and remote indicators
- Converts to wall sounder beacon – add the SI/CAP2 cap for wall mounting without changing product
- Single loop addressing – programmed via the TCH-B200 hand held programmer
- EN54-23 ‘O’ rated beacon – with a SIL Level 2 approved variant available
Specifications
| Ordering Codes | YBO-BSB2, YBO-BSB2(WHT), YBO-BSB2(BLK) |
|---|---|
| Case Colour Options | Ivory, white or black |
| Led Colour Options | White (/WL) or red (/RL) |
| Operating Voltage | 17 ~ 41 VDC |
| Low Power Mode (Typical) | 110 µA |
| Quiescent Current (Typical) | 250 µA |
| Sounding Current (Typical) | 0.8 mA (50 dB(A) @ 1m) ~16 mA (98 dB(A) @ 1m) |
| Additional Current When Beacon Active | + 7 mA |
| Sound Output At 1m | 50 ~ 98 dB(A) (±2 dB(A)) @ 24 VDC or above (EN54-3 compliant) |
| Number Of Tones | 51 |
| Tone Frequency Range | 300 ~ 2850 Hz |
| Flash Frequency | 0.5 or 1Hz (panel compatibility dependant) |
| 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 / Lens Material | Ivory, white or black / PC ABS / translucent PC |
| Ip Rating | IP21 |
| Weight | 160g |
| Dimensions | Ø 113 x H 43 mm |
| Base Fixing Centres | 48 ~ 74 mm |
| Addressing | Single loop address via TCH-B200 hand held programmer (use addresses 1-127 only) |
| Approvals | EN54-23 ‘O’ rated beacon; SIL Level 2 approved variant available |
FAQ
Yes, it’s designed to fit the Standard Base (YBN-R/3) or the Isolator Base (YBN-R/3(SCI)). Both bases also support ESP sensors, addressable beacons and remote indicators, so you can standardise on one base type across a job. Yes, the sounder and beacon elements can be controlled independently, though this depends on the capability of the connected fire panel. Check your panel’s programming options before relying on independent control in the design. The YBO-BSB2 is addressed using the TCH-B200 hand held programmer. Although the programmer will accept addresses from 128 to 255, only addresses 1 to 127 should be used on this device. Yes, fitting the SI/CAP2 cap converts the YBO-BSB2 into a wall sounder beacon, so you don’t need a separate wall product for this application. No, it’s rated IP21 and is intended for internal use only. For external or damp locations you’ll need a different enclosure or product. It lets you set a fixed operating time after which the sounder or beacon automatically switches off, reducing noise pollution once the alert has run for the configured period. This feature is panel-compatibility dependent, so confirm support with your panel manufacturer.Will the YBO-BSB2 fit my existing Hochiki bases?
Can I run the beacon without triggering the sounder, or vice versa?
How do I set the loop address?
Can this be used as a wall-mounted unit instead of a ceiling base sounder beacon?
Is the YBO-BSB2 suitable for outdoor installation?
What does the auto-shutdown feature actually control?
Downloads
- Datasheet (Adobe PDF)
- Light Coverage (Adobe PDF)
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