Ajax GlassProtect Fibra Black Wired Glass Break Detector

Ajax GlassProtect Fibra Black Wired Glass Break Detector

The Ajax GlassProtect Fibra in black is a wired indoor glass break sensor designed for the Ajax Fibra product line. It uses a built-in electret microphone paired with a two-stage detection algorithm to recognise the distinct sound signature of breaking glass, while ignoring everyday noises such as barking dogs, passing traffic, or thunder. Built on Ajax's proprietary Fibra wired bus technology, it combines the tamper resistance of a hardwired connection with fast, two-way digital communication back to the hub, making it a reliable choice for commercial and residential installations where cabling is preferred over radio.

Key Features

• Two-factor glass break detection: Confirms both the low-frequency impact sound and the high-frequency sound of shattering glass within 1.5 seconds before triggering an alarm.
• Built-in electret microphone: Continuously listens for acoustic patterns unique to breaking glass.
• Adjustable sensitivity: Three sensitivity levels can be configured remotely through the Ajax app to suit the room and glazing type.
• Fibra wired technology: Delivers two-way communication, instant event delivery, and remote configuration over a hardwired bus.
• Long cable runs: Supports bus lengths of up to 2,000 metres when using U/UTP cat.5 twisted pair cable.
• Tamper protection: Generates an alert if anyone attempts to detach the unit from its mounting surface.
• Third-party detector input: Accepts a wired auxiliary detector with a normally closed (NC) output for extending protection.
• Low-power operation: Powered directly from the Fibra line, drawing only microamps of current.
• Discreet black finish: Designed to blend into darker interiors, frames, and fittings.

Reliable Perimeter Protection for Glazed Areas

This detector is best suited to offices, retail showrooms, warehouses, and homes with exposed glass windows, doors, or display cabinets. Because it relies on a wired Fibra connection rather than radio, it is well suited to larger sites, metal-framed buildings, or installations where installers want the stability of cabling combined with the flexibility of digital configuration. As part of an Ajax security system, all detected events are logged in the Ajax app notification feed, and the hub can trigger sirens, scenarios, or alerts to the property owner and monitoring station the moment a break is confirmed.

What's in the Box

• GlassProtect Fibra detector unit (black)
• Mounting screws and fixings
• Quick start guide

Frequently Asked Questions

Does it detect glass with protective film applied?
No, the detector is designed for bare glass and will not reliably register breaks on glass covered with anti-shock, sun-protective, or decorative film, as the sound is muffled.

How is it connected to the security system?
It connects via the wired Fibra bus, which supports two-way communication and cable runs of up to 2,000 metres using standard cat.5 twisted pair.

Can it be installed outdoors?
No, this detector is designed for indoor use only.