GlassProtect U Wireless Glass-Break Detector (Jeweller), 9 m, CR123A - 130351.05.WH1

Introduction to the GlassProtect U Wireless Glass‑Break Detector and Its Key Features

The GlassProtect U (Jeweller) is a compact, battery‑powered indoor glass‑break detector designed to add a targeted layer of protection for windows and glazed surfaces. Combining an electret microphone with Ajax’s DualTone two‑stage detection algorithm (impact + fragment ringing), it aims to detect genuine glass‑break events reliably while minimising false alarms. Communication with the security hub uses the Jeweller encrypted two‑way protocol, offering robust telemetry and long wireless range in open space.

Key features at a glance:

• DualTone acoustic detection (impact + ringing) for fewer false alarms.
• Detection coverage up to 9 m and an approximately 180° horizontal angle, with three sensitivity levels (Low / Normal / High).
• Pre‑installed CR123A battery with multi‑year life (Ajax estimates up to ~7 years depending on polling intervals).
• Jeweller encrypted two‑way wireless protocol with up to 1,000 m open‑space range to the hub or repeater.
• SmartBracket mounting, anti‑tamper protection, and a terminal for one wired NC contact for integration with external detectors.

Detailed Specifications and Benefits

• Model: GlassProtect U (Jeweller) — 130351.05.WH1
• Detection method: Electret microphone (acoustic)
• Detection algorithm: DualTone (requires impact + ringing)
• Detection range: 0.3–9 m
• Detection angle: ≈180° horizontal
• Sensitivity: 3 levels (Low / Normal / High)
• Wireless protocol: Jeweller, encrypted two‑way (868 MHz family)
• Communication range: Up to 1,000 m (open space to hub / ReX)
• Battery: 1 × CR123A (pre‑installed); up to ~7 years depending on polling
• External input: NC contact terminal for wired detector
• Tamper: Anti‑opening and removal tamper
• Operating temperature: −10 to +40 °C (confirm for regional SKU)
• Protection rating: IP50 (indoor use)
• Dimensions: Approx. 103 × 22 × 21 mm
• Weight: Approx. 30–40 g
• Certification: CE / UKCA may apply — confirm for SKU

• Accurate detection with fewer false alarms: The DualTone algorithm requires both an initial impact sound and the subsequent fragment ringing typical of shattered glass. This two‑stage approach reduces nuisance alerts caused by single knocks, loud noises, or other non‑glass impacts.
• Good coverage from a small device: With up to 9 m detection range and a wide horizontal angle, a single GlassProtect U can cover many standard window layouts, reducing the number of sensors needed and simplifying installations.
• Long battery life and low maintenance: A pre‑installed CR123A battery rated for multiple years means minimal servicing for most residential and many commercial installations. This is especially useful for retrofit projects where running power is impractical.
• Robust wireless comms: Jeweller encrypted two‑way communication provides a dependable link to the Ajax hub with signal verification and long open‑space range. When combined with repeaters, larger properties can be covered effectively.
• Flexible integration: The NC contact terminal enables connection of an additional wired detector (e.g., a vibration sensor), providing hybrid detection schemes for enhanced reliability.
• Simple and secure mounting: SmartBracket mounting with tamper protection both eases installation and helps ensure the detector isn’t easily disabled by an intruder.

Use Cases and Scenarios Where GlassProtect U Excels

The GlassProtect U is designed primarily for indoor glass protection. Typical scenarios where it shines include:

• Residential windows and patio doors: It provides an unobtrusive, battery‑powered option to protect vulnerable glazing without drilling or wiring for power in every location.
• Retail shopfronts and display cases: Acoustic detection works well to detect forced entry through shop windows or broken display cases, and the detector can be discreetly installed near merchandise.
• Office buildings and communal areas: In open plan offices or lobbies with glazing, GlassProtect U can complement door contact sensors and motion detectors to cover glass panels that intruders might exploit.
• Complementing other sensor types: Where accelerometer‑based shock sensors or magnetic contacts might miss certain attack vectors (for example, distant impact causing fragments to ring), the acoustic detector adds another dimension to detection strategies.
• Heritage or retrofit sites: Locations where running wiring or altering the building fabric is restricted benefit from a wireless, battery‑powered solution with long battery life and small footprint.

Comparisons with Similar Products on the Market

Glass break protection is available from a variety of manufacturers and in several forms: acoustic (microphone‑based), shock/impact (accelerometer), and dual‑technology hybrids. Here’s how GlassProtect U compares in important ways:

• Acoustic detectors like GlassProtect U listen for the sonic characteristics of breaking glass. They are typically sensitive to glass fragments and ringing that follow impact, often detecting breakage even when the sensor isn’t mounted directly on the glass. This makes them suitable for protecting large panes or multiple windows from a single mounting point.
• Shock sensors detect physical vibration transmitted through the frame or mounting surface. They are effective when attached directly to the window or frame but may miss events if the impact doesn’t transmit strong vibrations to the mounting point.
• In practice, acoustic detectors are often used alongside shock sensors to provide redundancy and reduce false negatives; GlassProtect U’s wired input also enables such hybrid setups.

• Compared with many consumer‑grade wireless glass detectors, the GlassProtect U benefits from Ajax’s Jeweller protocol, which focuses on encrypted two‑way telemetry and long radio range. This makes it well suited for professional installations where reliable comms and remote supervision matter.
• Battery life of up to ~7 years (depending on hub polling settings) places it among the longer‑lasting battery detectors, reducing maintenance visits compared with models that require annual battery changes.

• DualTone two‑stage detection helps reduce common nuisance triggers compared with single‑stage acoustic sensors that may respond to any loud noise. Many commercial alternatives also offer multi‑stage logic, but the combination of impact plus ringing is a practical choice for distinguishing real break events from incidental noise.

Installation Tips and Best Practices

• Mount the detector on an interior wall aimed at the protected glazing. Follow datasheet guidance on mounting height and orientation to ensure reliable coverage of the intended windows.
• Test sensitivity settings in situ. Start on Normal and evaluate; increase to High only if required for larger rooms or distant glazing, and lower to avoid nuisance alarms in noisy environments.
• Avoid placing the detector near loud mechanical equipment, speakers, or HVAC outlets that generate strong impulsive sounds or sustained noise.
• Use the NC contact terminal if you want to add a wired sensor for a hybrid detection approach—this can add resilience for certain attack methods.
• Confirm regional certifications and SKU details (130351.05.WH1) for compliance with local regulations before final installation in regulated commercial sites.

Conclusion: Why GlassProtect U Is a Strong Choice for Indoor Glass Protection

The GlassProtect U (Jeweller) offers a compelling blend of accurate acoustic detection, long battery life, secure wireless communications, and straightforward installation. Its DualTone algorithm reduces false alarms by requiring both impact and fragment ringing characteristics, while adjustable sensitivity and a wide coverage angle make it adaptable to many domestic and commercial layouts.

For installers and end users seeking a low‑maintenance, effective glass‑break detector that integrates into a professionally managed wireless security system, GlassProtect U provides a practical, modern option. Whether used alone to cover multiple panes from a single mounting point or combined with shock sensors for layered protection, it fills a valuable role in a complete intrusion detection strategy.

Before purchase and deployment, confirm the SKU and regional certifications for compliance, test placement and sensitivity on site, and consider integrating the detector into a broader system using the Jeweller hub and repeaters where needed to ensure coverage across larger properties.

Overall, GlassProtect U is a well‑designed device for those who value discreet, reliable glass protection backed by strong wireless performance and long battery life.