The Ajax Systems Protect 2 standalone carbon monoxide detector detects CO concentrations and alerts you with sound and light using its built-in siren. It can operate independently without a Hub or as part of the Ajax security system, communicating wirelessly via Jeweller. The built-in battery lasts up to 10 years; once depleted, the entire device must be replaced.

• Type: Carbon monoxide (CO) detector
• Operation: Standalone or as part of an Ajax system
• Detector type: Wireless
• Use: Indoor
• Alert type: Sound and light
• Siren volume: 85 dB at a distance of 3 m
• Transmission power: 20 mW
• Maximum distance from Hub: Up to 1,700 m in an open area
• Communication protocol: Jeweller (868.0–868.6 MHz)
• Tamper alarm: Yes
• Standard compliance: EN 50291-1:2018
• CO concentration alarm: Above 50 ppm (0.005%) within up to 90 minutes, above 100 ppm (0.01%) within up to 40 minutes, above 300 ppm (0.03%) within up to 3 minutes
• Battery: Built-in, non-replaceable
• Battery life: Up to 10 years
• Operating temperature: From 0 °C to +50 °C
• Operating humidity: Up to 80%
• Dimensions: 43.5 × 86 × 86 mm
• Weight: 143 g
• Compatibility: Hub Plus, Hub 2 (2G), Hub 2 (4G), Hub 2 Plus, Hub Hybrid (2G), Hub Hybrid (4G), ReX, ReX 2, and all Ajax peripherals