Introduction to the CHQ-POM Powered Output Module
CHQ-POM Powered Output Module, 24 V DC, Addressable ESP— also marketed as the Addressable 24V Powered Output Module (CHQ-POM) — is a compact, addressable peripheral designed to deliver a nominal 24 V DC powered output on Hochiki ESP addressable loops. The module provides a configurable maximum output current, two supervised inputs, and simple colour-coded flying leads for quick wiring. Its small footprint, flexible current settings and compatibility with ESP systems make it an attractive option for installers who need a local powered output for small third-party devices such as conventional sounders, relays or conventional flame detectors.
Key features at a glance
- Nominal output:24 V DC.
- Adjustable current:User-selectable maximum between 2 mA and 32 mA in 2 mA steps.
- Monitored inputs:Two supervised inputs for local contacts or devices.
- Addressing:Uses a single ESP loop address and is programmed via a Hochiki handheld programmer (TCH-B200/PL-3).
- Wiring:Colour-coded flying leads and loop terminals for straightforward installation.
Detailed specifications and benefits
The CHQ-POM is engineered to provide a reliable, local 24 V DC supply where the main loop cannot directly power third-party devices or where isolation of the device feed is preferred. Key electrical specifications include a nominal 24 V DC output and user-selectable output current from 2 mA up to 32 mA in fine 2 mA increments. This granularity gives installers control to match the module’s maximum delivery to the needs of connected devices while conserving loop power and avoiding nuisance loading.
Alarm current is listed as approximately 2.3 → 32.3 mA depending on the selected maximum setting, and the module reports a quiescent (standby) current of roughly 200 µA at 41 V. The loop operating voltage range is reported between 17–31 V DC (some listings indicate compatibility up to 41 V), and the test signal voltage is in the region of ~14–30 V DC. Those numbers make the CHQ-POM suitable for typical ESP loop environments, but installers should always confirm actual system voltages and tolerances before commissioning.
Physically the unit is compact (approx. 65 × 42 × 19 mm excluding cables), and it supports programming on a single ESP address. The two monitored inputs are supervised, enabling the CHQ-POM to not only supply power but also monitor local devices or contacts for open/short conditions — a useful capability for combined device control and supervision.
From a benefits perspective, the CHQ-POM’s strengths include:
- Flexibility:Adjustable current settings accommodate a variety of third-party devices without overloading the loop or the accessory.
- Compact footprint:Small size simplifies mounting within enclosures where space is limited.
- Simplified wiring:Colour-coded flying leads reduce installation errors and speed up commissioning.
- Dual functionality:The combination of a powered output and two supervised inputs removes the need for separate power and input modules in some scenarios.
- Addressable control:Full integration with Hochiki ESP loops allows central monitoring and control while keeping a small site-level power capability.
Use cases and scenarios where CHQ-POM excels
The CHQ-POM finds its niche where small amounts of local 24 V DC power are required alongside monitored inputs, particularly when installers want to avoid deploying a dedicated power supply or multiple modules. Typical use cases include:
In installations that mix addressable and conventional devices, the CHQ-POM can power a single conventional sounder or visual indicator from the ESP loop without needing a full auxiliary power supply. The adjustable current limiter ensures the output is capped to the device’s requirements and prevents excessive draw on the loop.
Relays used for door release, ventilation shutdown, or control of non-fire systems often need a small DC feed. CHQ-POM’s supervised inputs can also be used to monitor triggering contacts, so the module can both power and supervise relay control circuits in compact installations.
Some legacy or third-party detectors (for example certain conventional flame detectors) require a local 24 V supply and supervision. CHQ-POM affords a clean, addressable solution for powering and monitoring those devices while keeping the loop’s integrity intact.
In retrofits where adding a separate PSU or larger modules is impractical, the CHQ-POM’s size and wiring simplicity make it easy to add local power and inputs without major rewiring or enclosure changes.
Comparisons with similar products
When choosing a powered output module, installers typically evaluate addressability, output voltage/current, supervisory capability, size and ease of wiring. The CHQ-POM compares favourably across several of these dimensions:
- Against simple relay or passive modules:Many passive or relay-only modules do not provide a local powered output. CHQ-POM’s 24 V feed is a clear advantage where a powered device must be supported locally.
- Against fixed-current powered modules:Some competitor modules provide a fixed output current or limited adjustment ranges. CHQ-POM’s 2–32 mA in 2 mA steps offers finer control for matching loads and managing loop power consumption.
- Against larger power supplies:Dedicated auxiliary power supplies deliver greater current but at the cost of space, complexity and higher cost. For small loads, CHQ-POM is more cost-effective and compact.
- Addressability and supervision:CHQ-POM’s supervised inputs and single ESP address fit naturally into monitored systems, a feature sometimes absent on simpler powered modules that lack supervision or addressability.
When comparing products, always verify approvals and certificate status (e.g., EN54-18 compliance, LPCB or VdS markings) against official datasheets and certificates. Distributor pages often reference standards, but exact approvals should be confirmed from manufacturer documentation.
Customer feedback and installer impressions
While specific published testimonials for CHQ-POM may be limited, feedback from installers working with similar addressable powered-output modules suggests a few recurring themes that apply to the CHQ-POM experience:
- "The adjustable current setting is very useful when matching outputs to different devices — it saves time and reduces the need for additional components."
- "Colour-coded flying leads made wiring and fault finding much quicker during installation and maintenance."
- "Compact size allowed me to fit the module into an existing enclosure without reconfiguring the cabinet layout."
These representative comments reflect common installer priorities: ease of installation, configurability and space-saving design. Prospective buyers should consult local distributors or communities for direct reviews and case studies specific to CHQ-POM deployments.
Installation, compliance and documentation
The CHQ-POM should be installed and commissioned by competent personnel in accordance with local regulations and relevant standards (for example BS 5839 where applicable). Distributor listings reference EN54-18; however, confirming exact approvals such as LPCB or VdS via the official product certificate and datasheet is essential before specifying the module in safety-critical projects. For wiring diagrams, programming details and full technical data, refer to the official CHQ-POM product specification and installation instruction PDFs supplied by the manufacturer or authorised distributors.
Conclusion: Why choose the CHQ-POM?
The CHQ-POM Powered Output Module represents a practical, flexible solution for small local 24 V DC power needs on Hochiki ESP addressable loops. Its adjustable current range, supervised dual inputs and compact form factor make it particularly well suited to mixed-technology systems, retrofit projects and space-constrained enclosures. For installers who need a reliable, addressable feed for conventional sounders, relays or small detectors without the complexity and cost of larger power supplies, the CHQ-POM is a compelling choice — provided you verify certifications and ensure the selected current setting and system voltages match the connected devices.
For full specification details, approvals and installation guidance, consult the official CHQ-POM datasheet and installation manual from the manufacturer or authorised distributors.
