An acoustic glass break detector covering up to 30 feet across 180 degrees, which from one well-placed position usually covers every pane in a room. It runs up to seven years on the pre-installed battery.
Built for the installer
DualTone is what keeps it quiet. The detector requires both the low-frequency thud of the impact and the high-frequency shatter before it alarms, so a dropped glass, a slammed door or a dog barking does not produce a call-out.
Glass break detection catches an intrusion at the moment the pane goes rather than when someone climbs through, which on a shop front or a patio door buys real time. There is also an NC terminal input, so a wired contact can be brought onto the system through this device.
Key features
- 30 ft at 180 degrees covers a whole room's glazing from one position
- DualTone verification requires impact and shatter frequencies together, filtering nuisance sounds
- Detects at the moment the pane breaks, not when someone climbs through
- Up to 7 years on the pre-installed CR123A
- NC terminal input to bring a wired contact onto the system
System requirements
Requires an Ajax hub or range extender. Indoor use only. Mount with a clear acoustic path to the glazing being protected.
Specifications
| SKU | AJ-42805 |
|---|---|
| Brand | AJAX |
| Radio communication range | Up to 3,250 ft in open space, between the device and a hub or range extender |
| Sensitive element | Electret microphone |
| Glass break detection distance | From 1 to 30 ft |
| Glass break detection angle | Horizontal 180 degrees |
| Verification | DualTone, two-factor low and high frequency analysis |
| Sensitivity | 3 levels, adjustable in the Ajax app |
| Additional input | Wired detector with normally closed (NC) contact |
| Sabotage protection | Tamper alarm on enclosure opening or removal from the mounting panel |
| Use environment | Indoor use only |
| Power input | 1 x CR123A, pre-installed |
| Battery life | Up to 7 years |
| Dimensions | 3.54 x 0.79 x 0.79 in |
| Device weight | 1.06 oz |
| Operating temp | 14F to 104F |
| Operating humidity | Up to 75% |
| Protection class | IP50 |
| Colour | White |
| 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 |