Introduction to Ajax CombiProtect and its key features
Ajax CombiProtect (White)is a compact, wireless indoor combined motion and glass‑break detector designed for modern security systems. By integrating a passive infrared (PIR) motion sensor and an electret microphone that detects glass‑break sounds using Ajax's DualTone algorithm, CombiProtect provides two layers of protection in a single device. Key features include a motion detection range up to 12 m, glass‑break coverage up to 9 m, pet‑immune operation for animals up to ~20 kg (50 cm), encrypted two‑way Jeweller radio communications, pre‑installed CR123A battery with up to five years of life, and anti‑sabotage protections such as a tamper switch and SmartBracket mounting.
Detailed description of specifications and benefits
CombiProtect packages multiple technical capabilities into a household‑friendly form factor (110 × 65 × 50 mm, 92 g). Its PIR motion channel is tuned to reliably detect human movement across a broad field of view (horizontal 88.5°, vertical 80°) and up to 12 m away, making it suitable for corridors, living rooms and other medium to large indoor spaces. The sensitivity is adjustable across three levels so installers and users can balance responsiveness and false alarm suppression.
The integrated glass‑break detector uses an electret microphone and the DualTone algorithm to distinguish authentic glass‑break acoustics from other noises. With an effective glass detection radius of up to 9 m, CombiProtect can cover windows and glazed doors without requiring a separate acoustic sensor in many installations. This dual‑sensor approach reduces system complexity and cost by combining functions into one device.
The product’s radio subsystem operates on Ajax’s proprietary Jeweller protocol, offering an encrypted two‑way link, device authentication and jamming detection. Line‑of‑sight RF range can reach up to 1,200 m in open environments (region dependent). The detector supports remote configuration and diagnostics through Ajax mobile apps and can be integrated into professional monitoring setups using Ajax ocBridge Plus or uartBridge for central station reporting.
Powering the device is a pre‑installed CR123A 3 V battery. Typical battery life is up to five years, although real‑world longevity depends on reporting intervals and event frequency. Anti‑tamper features include a tamper switch that triggers an alert when the detector is removed from its SmartBracket, plus jamming detection to notify operators of RF interference attempts. The housing and mount make installation and maintenance straightforward while protecting against casual sabotage.
Key specifications at a glance:
- Weight: 92 g
- Dimensions: 110 × 65 × 50 mm
- Motion range: Up to 12 m
- Glass‑break range: Up to 9 m
- Detection angles: Horizontal 88.5°, Vertical 80°
- Sensitivity: 3 adjustable levels
- Operating temperature: −10 °C to +40 °C
- Humidity tolerance: Up to 75% (non‑condensing)
- Power supply: CR123A battery (pre‑installed)
- Battery life: Up to 5 years (typical)
- Pet immunity: Up to 20 kg / 50 cm
- Radio protocol: Jeweller (encrypted two‑way)
- RF range: Up to 1,200 m LOS (region dependent)
- Anti‑sabotage: Tamper switch, jamming detection, SmartBracket mount
- Classification: Indoor electro‑optical combined detector
Because it combines motion and glass‑break detection, CombiProtect reduces the number of devices required to achieve comprehensive room coverage. This simplifies wiring (or wireless pairing), reduces installation time and minimizes visible hardware inside a property. Pet‑immune functionality prevents nuisance alarms from small animals — a practical benefit for homes with dogs and cats — and adjustable sensitivity lets installers fine‑tune detection for each environment.
Encrypted communication adds a layer of security against interception and spoofing, while jamming detection alerts users to attempted RF interference. Long battery life lowers maintenance frequency, and SmartBracket mounting makes battery changes and servicing quick and tool‑free in many cases.
Use cases and scenarios where CombiProtect excels
CombiProtect is built for flexibility and performs well across a range of domestic and light commercial scenarios. Typical use cases include:
- Home perimeter protection: Place CombiProtect to cover rooms with windows or patio doors to detect both intruder movement and window break‑ins without installing separate acoustic detectors.
- Rental properties and short‑term lets: The combined sensor reduces hardware clutter and maintenance, while remote configuration via mobile apps simplifies management between occupants.
- Offices and retail spaces: In smaller offices, boutiques or store backrooms, the detector can provide both motion and glass‑break coverage where aesthetics and minimal hardware are important.
- Integrated smart homes: Works with Ajax hubs and can be part of automated scenes (e.g., trigger lights when motion is detected) while still sending events to monitoring services.
- Installations where pet presence is expected: The pet immunity helps avoid frequent false alarms from animals under ~20 kg, making it suitable for typical family homes.
CombiProtect is particularly useful where installation simplicity, concealed hardware and multi‑threat detection are priorities. For example, in a living room with a large window, a single CombiProtect mounted on a wall can detect both a person entering the space and the sound of glass breaking, offering broader coverage than a PIR alone.
Comparisons with similar products in the market
Combined motion and glass‑break detectors are a niche product category that aims to reduce device count and installation complexity. Compared to standalone PIR sensors plus separate glass‑break microphones, CombiProtect provides several advantages:
- Cost and complexity: Installing one combined sensor is typically cheaper and quicker than installing two separate devices and pairing them to the hub.
- Placement optimization: A single unit reduces mounting considerations and visual impact; however, for unusual room geometries or very large areas, multiple dedicated detectors may still be preferable.
- Signal processing: Ajax’s DualTone algorithm reduces false positives from common noises while remaining sensitive to genuine glass impact signatures. Performance may differ from other vendors’ acoustic algorithms; installers should test placement to ensure reliable detection.
Against other combined detectors on the market, CombiProtect stands out for its robust Jeweller RF link (long range and encrypted two‑way communication), long battery life with a commonly available CR123A cell, and the pet‑immune PIR. Where some competitors might sacrifice one sensor’s capability to save cost, Ajax maintains full‑range motion detection and respectable glass‑break coverage, making it a solid middle‑to‑high tier choice for professional and DIY setups.
Customer testimonials and typical user feedback
Official third‑party reviews for CombiProtect generally praise its ease of installation, clean design and reliable combination of motion and glass‑break detection. Common themes in user feedback include:
- Ease of setup: Installers and DIY users appreciate the SmartBracket mount and app‑based commissioning that simplifies configuration and sensitivity adjustment.
- False alarm reduction: Many users report fewer false alarms thanks to pet immunity and adjustable PIR sensitivity, especially in homes with pets.
- Battery life: Homeowners value the long battery life; replacement frequency is low compared with sensors that consume more power or use less common batteries.
- Confidence in detection: Combining motion and acoustic glass‑break detection in one housing gives users confidence that both intrusion vectors are monitored without added hardware clutter.
Note: These points reflect commonly reported impressions and feature evaluations rather than specific quoted testimonials. For verified customer reviews and ratings, consult retailer pages or independent review sites where buyers post their experiences.
Conclusion: Why Ajax CombiProtect is a great choice
Ajax CombiProtect delivers a compelling mix of convenience, performance and security features for anyone building a modern indoor alarm system. Its dual‑sensor approach reduces the number of devices required to protect a room, saving time and preserving aesthetics. The detector’s adjustable sensitivity, pet immunity, encrypted Jeweller communication and anti‑sabotage measures make it suitable for family homes, rental properties, small businesses and professional installations.
With a suggested retail price around 99.99, a long‑life CR123A battery included and integration options for central monitoring, CombiProtect is an efficient and cost‑effective component of a layered security strategy. Whether you are an installer looking to simplify deployments or a homeowner seeking reliable multi‑threat detection, CombiProtect combines practical features with proven technology to deliver straightforward, dependable protection.
