- Frequency Jeweller
CombiProtect Jeweller Combined Motion & Glass Break Detector, Black
SKU AJ-42795
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- 30-day returns on unopened products
A PIR and a glass break detector in the same enclosure, on one system point. For a room with glazing that needs both, this is one device, one battery, one enrollment and one point of the hub's capacity instead of two.
Built for the installer
Glass break detection uses an electret microphone covering 1 to 30 feet across 180 degrees, with DualTone verification. DualTone requires both the low-frequency thud of the impact and the high-frequency shatter before it alarms, which is why a dropped glass or a slammed door does not trigger it. Minimum glass size is 11 by 11 inches.
The motion side matches MotionProtect: 39 feet at 88.5 degrees with pet immunity to 44 pounds. Alarm.com publishes measured coverage per sensitivity level, from 44.9 by 52.4 feet on high down to 24.8 by 15.7 feet on low, which is unusually specific and worth using when planning a room.
Key features
- Two detectors on one system point, saving hub capacity, battery count and enrollment time
- DualTone glass break verification requires both impact and shatter frequencies before alarming
- Measured coverage published per sensitivity level, so a room can be planned rather than guessed
- Pet immunity to 44 lb and 1.6 ft on the motion side
- Glass break to 30 ft across 180 degrees from a single position
System requirements
Requires an Ajax hub or range extender. Indoor use only. Recommended mounting height is 7.9 ft. Minimum detectable glass size is 11 x 11 in.
Specifications
| SKU | AJ-42795 |
|---|---|
| Brand | AJAX |
| Radio communication range | Up to 3,900 ft in open space, between the device and a hub or range extender |
| Sensitive elements | PIR sensor and electret microphone |
| Motion detection distance | Up to 39 ft when installed at 7.9 ft |
| Motion detection angle | Horizontal 88.5 degrees |
| Measured motion coverage | High: 44.9 x 52.4 ft. Normal: 28.2 x 24.9 ft. Low: 24.8 x 15.7 ft |
| Glass break detection distance | From 1 to 30 ft |
| Glass break detection angle | Horizontal 180 degrees |
| Minimum glass size | 11 x 11 in |
| Glass break verification | DualTone, two-factor low and high frequency analysis |
| Sensitivity | 3 levels for each sensor, adjustable in the Ajax app |
| Pet immunity | Up to 44 lb weight and up to 1.6 ft height |
| Sabotage protection | Tamper alarm on enclosure opening or removal from the mounting panel |
| Use environment | Indoor use only |
| Colour | Black |
| Region | 9NA, North America model |
| Radio protocol | Jeweller, two-way encrypted wireless |
| Frequency band (North America) | 905.0-926.5 MHz, certified to UL/ULC standards |
| Radio modulation | GFSK with frequency hopping |
| Encryption | Block encryption with a dynamic key |
| Communication loss detection | After 36 seconds |
| Anti-spoofing | Device authentication |
| Warranty | 24 months |
| Frequency | Jeweller |
