Monnit wireless grains per pound sensors measure the mass in grains of H2O in otherwise dry air. Put simplistically, the measurement is the weight of water in air. This sensor uses a calibrated humidity sensor to obtain the absolute humidity at the current temperature and converts that value into the Grains per Pound measurement displayed. User customization allows you to set the frequency of readings and the ability to set conditions for alerts by SMS text, email or voice call.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
Grains Per Pound Sensor Specifications
|Accuracy||± 1.8% under normal conditions ( 10% - 90% RH )|
|RH Operating Range||0 – 100% RH|
|RH Operating Range||8 sec (tau 63%)|
Coin Cell Specifications
|Battery Type||Replaceable 3.0V Coin Cell Battery|
|Dimension||1.775 in x 1.04 in x 0.785 in|
|Max Operating Temperature||-20°C to +60°C (-4° to +140°F)|
|Optimal Battery Operating Temperature (Coin Cell)||+10°C to +50°C (+50°F to +122°F)|
|Supply Voltage||2.0 - 3.6 V (Single CR2032 Coin Cell Battery)|
|Device Range||250 - 300 ft. non-line-of-sight device range*|
|Battery Life||At 1 hour heartbeat setting, coin cell battery will typically last ~ 1-2 Years. **|
|Enclosure Technology||Monnit PinchPower™ Wireless Sensor Enclosures|
900 MHz Specifications
|Operating Frequency||900 MHz Operating Frequency|
|Certifications||Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-RFSC1)
Complies with Industry Canada standards. (IC: 9794A-RFSC1)