The Ajax Systems Protect 2 temperature detector detects high temperatures, sudden temperature rises, and carbon monoxide. It features a built-in siren for audible and visual alerts, and can operate as part of an Ajax system or independently, without a Hub.

• Type: Wireless heat and carbon monoxide detector
• Use: Indoor
• Operating mode: Standalone or connected to an Ajax system
• Alarm type: Audible and visual
• Siren volume: 85 dB at a distance of 3 m
• High-temperature alarm: Above 64 °C
• Rapid temperature-rise alarm: Increase of more than 10 °C in 1 minute or less
• CO alarm thresholds: Above 50 ppm for up to 90 minutes, above 100 ppm for up to 40 minutes, or above 300 ppm for up to 3 minutes
• Communication protocol: Jeweller (868.0–868.6 MHz)
• Transmitter power: 20 mW
• Maximum distance from the Hub: Up to 1,700 m in an open area
• Compatibility: Hub Plus, Hub 2 (2G), Hub 2 (4G), Hub 2 Plus, Hub Hybrid (2G), Hub Hybrid (4G), ReX, ReX 2, and Ajax peripherals
• Protection: Against device authentication spoofing
• Tamper alarm: Yes
• Power supply: 2 CR123A batteries
• Battery life: Up to 7 years
• Operating temperature range: From 0 °C to +50 °C
• Operating humidity: Up to 80%
• Fire safety standards: EN54-5:2017 A1:2018, EN50291-1 2018
• Dimensions: 43.5 × 86 × 86 mm
• Weight: 149 g
• Color: White