Humidity and Temperature
Humidity & Temperature General Description
ALTA® Wireless Humidity Sensors use a high-end, factory-calibrated industrial humidity transducer to accurately measure relative humidity (RH) and temperature. The sensor comes in various leaded and non-leaded options.
Key Features
Humidity Measurement Range: 0 to 100%
Temperature Measurement Range:
- Leaded: -25°C to 70°C (-13°F to 158°F)
- Non-leaded: Limited to the operational range of the sensor body (enclosure and battery)
Resolution: 0.01% RH, 0.01°C
Typical Accuracy: ± 2% RH, 0.3°C
Configurable thresholds for critical condition monitoring
Principles of Operation
The ALTA Wireless Humidity Sensor measures relative humidity (RH) and temperature on a user-configurable time interval or Heartbeat. The sensor uses a high-accuracy silicon based digital humidity/temperature element to produce % RH and temperature data. On every Heartbeat, the sensor reports the most recent measurement to the gateway, making the data available in iMonnit or other approved data services.
Features of Monnit ALTA Sensors
Wireless range of 2,000+ feet through 18+ walls1
Frequency-Hopping Spread Spectrum (FHSS)
Best-in-class interference immunity
Best-in-class power management for longer battery life2
Encrypt-RF® Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages)
Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
10-minute Heartbeats = ~ 22 days
2-hour Heartbeats = ~ 266 days
Automatic over-the-air updates to sensor firmware (future-proof)
Free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call
1 Actual range may vary depending on the environment and gateway.
2 Battery life is determined by the sensor reporting frequency and other variables. Other power options are also available
