Hochiki YBO-BS Addressable Base Sounder - Ivory Case

The Hochiki YBO-BS is a loop-powered addressable base sounder for Hochiki ESP systems, combining a sounder and detector mounting point in one device.

The Hochiki YBO-BS is an addressable, loop-powered base sounder in an ivory case for the Hochiki ESP analogue addressable fire alarm system. It fits onto the Hochiki standard base (YBN-R/3) or isolator base and can be fitted with any ESP sensor, addressable beacon or addressable remote indicator. It gives a choice of tones and volume levels up to 98 dB(A) with low current draw, and can be converted into a wall sounder by adding a cap.

Key features

• Loop powered with a single loop address, set automatically by the control panel or with the TCH-B200 hand-held programmer
• Variable sound output of 50 to 98 dB(A) (±2 dB(A)) at 1 m
• 51 user-selectable tones, all EN54-3 compatible
• Accepts ESP sensors, addressable beacons and addressable remote indicators
• Auto-shutdown feature to limit noise pollution
• Approved by LPCB and VdS
• SIL Level 2 approved variants available

Technical specifications

• Ordering code: YBO-BS (ivory)
• Operating voltage: 17 to 41 VDC
• Low power mode: 40 µA (typical)
• Quiescent current: 150 µA (typical)
• Sounding current: 0.8 mA (50 dB(A) at 1 m) to 16 mA (98 dB(A) at 1 m), typical
• Sound output at 1 m: 50 to 98 dB(A) (±2 dB(A)) at 24 VDC or above
• Number of tones: 51
• Tone frequency range: 300 to 2850 Hz
• Operating temperature: -10 °C to +50 °C
• Storage temperature: -30 °C to +70 °C
• Maximum humidity: 95% RH non-condensing (at 40 °C)
• Case material: PC ABS
• Ingress protection: IP21 (indoor use only)
• Weight: 152 g
• Dimensions: Ø112 x 67 mm (H)
• Base fixing centres: 48 to 74 mm
• Addresses: use 1 to 127 only

Used for: Hochiki ESP systems with sensors such as the Hochiki ALN-EN optical smoke detector.