Heiman HM2SA-1W Wireless Interconnected Smoke Detector

EN 14604 Certified | wireless Whole-Building Fire Protection for European Markets

Product Overview

The heiman HM2SA-1W is a next-generation, wirelessly interconnected photoelectric smoke alarm engineered specifically for European residential and light-commercial fire safety standards. Operating on the RF868 MHz frequency band, this EN 14604-certified detector eliminates the need for complex hardwiring while delivering reliable, synchronized whole-building fire protection. When any unit in the network detects smoke, every connected alarm sounds instantly, while intelligent visual indicators pinpoint the exact trigger location. Designed for rapid deployment, zero-maintenance operation, and strict regulatory compliance, the HM2SA-1W is the preferred choice for contractors, property managers, and fire safety consultants across the EU and UK.

Core Features & System Advantages

RF868 Wireless Interconnect Mesh

The HM2SA-1W utilizes a secure, low-power RF868 MHz communication protocol to form a self-organizing wireless alarm network. Up to 30 units can be grouped on a single RF channel without repeaters, ensuring robust signal penetration through modern building materials. Unlike Wi-Fi or Bluetooth-dependent alarms, RF868 operates independently of home networks, guaranteeing fire alert reliability even during internet or router failures.

Instant Group Alarm + Source Localization

In the event of smoke detection, the triggering unit initiates an RF868 broadcast that silences local delays and activates all interconnected detectors simultaneously. Each device features a dedicated Alarm Origin LED that remains illuminated or flashes at a distinct rate, allowing occupants, first responders, or facility staff to immediately identify which room or zone initiated the alarm. This dual-function capability meets modern European best practices for rapid evacuation and targeted incident response.

Whole-Building Fire Protection Architecture

Engineered for multi-level homes, apartment blocks, student housing, and small commercial premises, the HM2SA-1W scales effortlessly. Installers can configure multiple RF channels to separate zones (e.g., floors, wings, or independent tenancies) while maintaining code-compliant alarm synchronization within each zone. The system seamlessly integrates with existing fire safety layouts and complies with BS 5839-6 and national building fire regulations that mandate interconnected detection.

Long-Life Power & Low-Battery Supervision

Powered by a high-capacity sealed lithium battery (typically rated for 10 years of service), the HM2SA-1W eliminates routine battery replacement. The device continuously monitors power integrity and issues a distinct low-battery warning chirp at 30-day intervals when voltage drops below operational thresholds, per EN 14604 power supervision requirements.

Advanced Photoelectric Sensing Chamber

The optical sensing chamber utilizes optimized light-scattering geometry to detect slow-smoldering fires (paper, fabric, upholstery) with high reliability. The internal labyrinth design minimizes dust accumulation and reduces susceptibility to airflow drafts, humidity, and insect ingress, ensuring stable long-term performance in diverse European climates.

Technical Specifications

Certification & Compliance: EN 14604:2005 Mapping

The Heiman HM2SA-1W is independently tested, certified, and CE/UKCA marked to EN 14604:2005 smoke alarm devices for residential premises. Key compliance validations include:

• Clause 5.4 & Annex B (Sensitivity & Test Fire Response): Validated against TF2 (smoldering wood) and TF3 (flaming paper) test protocols. The photoelectric chamber meets threshold sensitivity requirements while maintaining immunity to transient environmental particles.
• Clause 5.8 (Interconnection Function): Certified for wireless alarm synchronization. Upon trigger, all networked units must activate within 30 seconds of the initiating device, with audibility maintained across the designated coverage area.
• Clause 5.9 (Audible Alarm Signal): Minimum 85 dB(A) at 3 meters, frequency-modulated to penetrate ambient household noise and sleep conditions.
• Clause 5.11 (Power Supply & Low-Battery Warning): Continuous voltage monitoring ensures ≥ 85 dB alarm capability until power depletion. Low-battery indication initiates ≥ 30 days before operational failure, matching European safety timelines.
• Clause 6.10 (Environmental Durability): Tested under temperature cycling, humidity exposure, and mechanical vibration to guarantee reliable performance in typical EU residential environments.

Full test reports, DoC (Declaration of Conformity), and notified body certificates are available upon request for permitting, insurance audits, or building control submissions.

System Deployment & Installation Guidelines

The HM2SA-1W is designed for rapid, tool-minimized installation while maintaining strict adherence to European fire placement codes:

• Pairing Process: Press the interconnect/test button on the master unit, then follow LED/audible prompts to add secondary units to the RF868 group.
• Placement Strategy: Minimum one unit per sleeping area, one outside each bedroom zone, and on every accessible level. Maintain ≥ 30 cm from walls/corners and ≥ 50 cm from HVAC vents to ensure optimal smoke entry.
• Channel Segmentation: For multi-tenant buildings, assign separate RF channels per dwelling unit to prevent cross-alarm interference while maintaining intra-unit interconnect compliance.
• Testing & Commissioning: Monthly test button verification recommended. RF868 signal integrity can be validated via the integrated test cycle, which confirms network synchronization and source ID functionality.

Frequently Asked Questions (FAQ)

Q: Is the Heiman HM2SA-1W compliant with UK and EU fire alarm regulations?
A: Yes. It carries full CE/UKCA marking under EN 14604:2005 + A1:2012, meeting mandatory requirements for residential smoke alarms in the UK, Germany, France, Netherlands, and most EU member states.

Q: How does the RF868 wireless interconnect differ from Wi-Fi or zigbee smoke alarms?
A: RF868 operates on a dedicated 868 MHz ISM band specifically allocated for life-safety signaling in Europe. It requires no internet, router, or hub, offers superior wall penetration, and maintains alarm functionality during network outages. This makes it the industry standard for code-compliant wireless smoke detector networks.

Q: Can I locate which detector triggered the alarm?
A: Yes. The HM2SA-1W network includes an alarm source identification feature. When activated, the triggering unit displays a distinct LED pattern, allowing occupants or emergency personnel to quickly identify the fire's origin zone without checking each device manually.

Q: What happens when the battery nears end-of-life?
A: Per EN 14604 Clause 5.11, the detector emits a periodic low-battery warning chirp at least 30 days before power depletion. The alarm remains fully functional during this period. Once the battery expires, the unit must be replaced as part of its 10-year service lifecycle.

Q: How many units can be linked, and what is the effective RF range?
A: Up to 40 units per RF868 channel. Typical open-range transmission exceeds 50 meters; in standard residential construction (brick, plasterboard, timber), reliable interconnect coverage spans 3–5 floors or a 200–300 m² footprint per channel.

Documentation & Compliance Resources

• EN 14604:2005 Certification Certificate & Test Summary
• RF868 Interconnect Installation & Pairing Guide
• CE/UKCA Declaration of Conformity (DoC)
• CAD Mounting Diagrams & Placement Compliance Checklist
• RoHS & REACH Environmental Compliance Statements