Monnit's ALTA wireless humidity sensors allow you to monitor the relative humidity of the air within a room or enclosure. Ideal for monitoring humidity within greenhouses, industrial spaces, museums, saunas and humidors. They can also be used for residential applications such as controlling mold, mildew or dust mites.
ALTA sensors offer 3 to 4 times the range of standard sensor platforms, extending non-line-of-sight reach to an exceptional 1,200+ feet through walls (12-14 walls typical). Using Frequency-hopping Spread Spectrum (FHSS) also allows ALTA sensors to have better interference immunity from other wireless devices.
Superior power management provides ALTA sensors with almost twice the battery life of Monnit’s standard wireless sensors.
Integrated on-board data storage allows ALTA sensors to store data messages if communication to a wireless gateway is disrupted (power outage, Internet outage, or out of range). Messages that can’t be delivered will be time-stamped and stored in memory (up to the last 512 messages) until communication with the gateway is restored, at which point the messages will all be transmitted.
Over-the-air updates allow ALTA products to be updated remotely if new fixes or features become available.
The sensor shows best performance when operated within recommended normal temperature and humidity range of 5°C– 60°C and 20%RH – 80%RH, respectively. Long-term exposure to conditions outside normal range, especially at high humidity, may temporarily offset the RH signal (e.g. +3%RH after 60h kept at >80%RH). After returning into the normal temperature and humidity range the sensor will slowly come back to calibration state by itself. Prolonged exposure to extreme conditions may accelerate ageing.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
Humidity Sensor Specifications
|Accuracy||± 3% under normal conditions ( 10% - 90% RH )|
|RH Operating Range||0 – 100% RH|
|RH Response Time||8 sec ( tau 63% )|
|Security||Encrypt-RF® (256-bit key exchange and AES-128 CTR)|
ALTA Coin Cell Specifications
|Battery Type||Replaceable 3.0V (CR2032) Coin Cell Battery|
|Dimension||2.0 in x 1.125 in x 0.875 in|
|Max Operating Temperature||-7°C to +60°C ( 20°F to +140°F )|
|Optimal Battery Operating Temperature (Coin Cell)||+10°C to +50°C ( +50°F to +122°F )|
|Supply Voltage||2.0 - 3.8 VDC|
|Battery Life||At 1 hour heartbeat setting, coin cell battery will last up to 4 years. **|
|Enclosure Technology||Monnit PinchPower™ Wireless Sensor Enclosures|
ALTA 900 MHz Specifications
|Operating Frequency||900 MHz Operating Frequency|
|Certifications||Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)
Complies with Industry Canada standards. (IC: 9794A-G2SC1)
|Device Range||Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*|
|Security||Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)|