Overview
- Wireless Protocol
- Jeweller (Ajax)
- Radio Frequency
- 866.0–866.5 MHz 868.0–868.6 MHz 868.7–869.2 MHz 905.0–926.5 MHz 915.85–926.5 MHz 921.0–922.0 MHz
- Encryption
- AES
Physical
- Dimensions
- 77 × 77 × 34.5 mm (3.03 × 3.03 × 1.36 in)
- Weight
- 127 g (4.48 oz)
Jeweller communication technology
- Maximum effective radiated power (ERP)
- up to 20 mW
- Radio signal modulation
- GFSK
- Radio communication range
- up to 5,600 ft
Temperature measurement
- Sensitive element
- Digital temperature and humidity sensor
- Measurement range
- from 32 °F to 122 °F
- Measurement Accuracy
- ±0.36 °F
- Measurement pitch
- 0.18 °F
- Temperature range
- Comfort level from 57 to 70 °F
Humidity measurement
- Measurement range
- from 0% to 100%
- Measurement Accuracy
- ±1.8%
- Measurement pitch
- 1%
- Humidity Range
- Comfort level from 30 to 60%
Carbon dioxide (CO₂) concentration measurement
- Sensitive element
- digital carbon dioxide sensor
- Measurement range
- from 400 to 10,000 ppm
- Air Quality Assessment Levels
- normal air: up to 1000 ppm;
moderately polluted air: from 1000 to 1400 ppm;
polluted air: from 1400 to 2000 ppm;
critically polluted air: more than 2000 ppm - Measurement Accuracy
- ±30 ppm or ±3%
- Measurement pitch
- 1 ppm
- CO2 Range
- Acceptable level to 1100 ppm
Additional Features
- Charts
- of temperature, humidity, and carbon dioxide concentration
- LED Indication
- green: Normal air;
yellow: Slightly polluted air;
red: Polluted air;
purple: Сritically polluted air - Automatic Calibration
- once every 1–14 days
- Manual Calibration
- is run in the Ajax apps.
- Scenarios
- reactions to changes in temperature, humidity, and carbon dioxide concentration
- Backup Memory
- up to 3 days
- Sabotage protection
- Accelerometer
- Protection against spoofing
- device authentication
- Communication loss detection
- within 36 seconds
Power Supply
- Power Supply
- 2 × CR123A battery
Enclosure
- Operating Humidity
- up to 85%
- Colours
- Black;
White