Hochiki CHQ-WS2 ESP Intelligent Addressable Wall Sounder | Auto Shutdown, Variable 90-102 dB(A) Output
£35.86
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Key features
- Auto shutdown mode cuts nuisance noise
- 90-102 dB(A) variable sound output
- Fits standard or isolator base
Downloads
Summary
The Hochiki CHQ-WS2 is an addressable wall sounder for commercial fire alarm systems, built with an auto shutdown mode that lets you set a fixed sounding time before the unit silences itself, cutting down the noise complaints and return visits that follow a prolonged test or a lingering false alarm.
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It’s the higher-output option in Hochiki’s addressable sounder range, reaching up to 102 dB(A) where Hochiki’s base-mounted sounder tops out lower, so it suits open-plan offices, warehouses and larger commercial floors where the alarm needs to carry over distance or background noise. That extra headroom gives you more scope on a single device spec rather than mixing sounder types across a site.
Fitting straight onto the Standard Base (YBO-R/3(RED)) or Isolator Base (YBO-R/SCI(RED)), you commission the CHQ-WS2 like any other addressable device: give it a single loop address with the TCH-B100 Hand Held Programmer and select from 51 tones to match the site’s cause and effect strategy. It’s also available in white where it needs to blend into the decor, and the CHQ-WPK weatherproof kit extends it to exposed locations.
Features
- Auto shutdown mode – set a fixed sounding time so the unit silences itself automatically, reducing noise pollution complaints after testing or a false alarm
- 90-102 dB(A) variable output – more volume headroom than Hochiki’s base-mounted sounder, useful on larger or noisier floors
- Fits standard or isolator base – mounts onto the YBO-R/3(RED) or YBO-R/SCI(RED) base, giving you a choice of wiring topology on the same loop
- 51 user-selectable tones – match the sounder tone to the site’s cause and effect matrix without swapping devices
- Single loop addressing via TCH-B100 – commissioned the same way as other Hochiki addressable devices, keeping programming consistent across the loop
- Weatherproof kit available – CHQ-WPK back box and gasket set takes the unit from IP21 to IP65 for exposed locations
- Also available in white – matches the finish to the building rather than defaulting to red
- Approved by LPCB and VdS, with SIL Level 2 variants available – covers standard commercial specification and safety-related system requirements
Specifications
| Ordering Code | CHQ-WS2 (Red) / CHQ-WS2(WHT) (White) / CHQ-WPK (Weatherproof Kit) |
|---|---|
| Operating Voltage | 17 ~ 41 VDC |
| Quiescent Current (Typical) | 150 µA (with YBO-R/3(RED)) / 200 µA (with YBO-R/SCI(RED)) |
| Sounding Current (Typical) | 2 mA (90 dB(A) @ 1 m) ~ 8 mA (102 dB(A) @ 1 m) |
| Sound Output (At 1 Metre) | 90 ~ 102 dB(A) (±2 dB(A)) @ 24 VDC or above |
| Number Of Tones | 51 |
| Tone Frequency Range | 300 ~ 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) |
| IP Rating | IP21 (IP65 with CHQ-WPK) |
| Base Fixing Centres | 48 ~ 74 mm |
| Colour / Case Material | Red or White / PC ABS |
| Weight / Dimensions | 152 g / Ø 112 x D 67 mm |
| Approvals | LPCB, VdS; SIL Level 2 approved variants available |
FAQ
Yes, it fits both the Standard Base (YBO-R/3(RED)) and the Isolator Base (YBO-R/SCI(RED)). Note the quiescent current differs slightly between the two: 150 µA with the standard base and 200 µA with the isolator base, so allow for this when calculating loop budget. The datasheet confirms the sounder has a user-settable auto shutdown mode but doesn’t detail the exact programming steps. Check the TCH-B100 Hand Held Programmer manual or the full installation guide for the configuration procedure before commissioning. On its own the CHQ-WS2 is rated IP21, suited to indoor use only. For outdoor or exposed installations, fit the CHQ-WPK weatherproof kit, which pairs a specialised back box and gasket set to take it up to IP65. If you need a sounder integrated into a detector base rather than a standalone wall unit, Hochiki’s base sounder option covers a lower output band. The CHQ-WS2 is the choice when you need the full 90-102 dB(A) range or a dedicated wall-mounted device. Hochiki states that SIL Level 2 approved variants of the CHQ-WS2 are available. Confirm the specific model code and certification scope with the manufacturer before specifying it on a safety-related system. Yes, it’s also available as CHQ-WS2(WHT) in white, using the same specification as the red version.Will the CHQ-WS2 work with an isolator base?
How do I set the auto shutdown time?
Can I use this outdoors or in an exposed location?
Which base sounder in the Hochiki range suits a confined space better?
Is there a version suitable for safety-related or SIL-rated systems?
Does it come in a colour other than red?
Downloads
- Datasheet (Adobe PDF)
Additional information
| Weight | 0.2 kg |
|---|---|
| Colour | |
| Device Type | |
| Environment | |
| Hazardous Applications | |
| Marine Applications | |
| Maximum Sound Level | |
| Protocol | |
| Short Circuit Isolator | |
| System Type |
More Sounder products from Hochiki
Hochiki CHQ-WSB2 | ESP Addressable Wall Sounder Beacon | High Intensity LEDs, 51 Tones, Auto-Shutdown
Hochiki YBO-BS | ESP Intelligent Addressable Base Sounder | Auto-Shutdown, Variable 50-98 dB(A) Output
