The Monnit Wireless Resistance Sensor outputs the resistance across a load. It is programmed to sleep for a user-given time interval (heartbeat) and then wakeup, send power to the load resistor, wait for it to stabilize, and convert the analog data, mathematically compute the resistance and transmit the data to the gateway, where it is then logged into a cloud service. The user can configure defined thresholds and have the system alert on threshold breaches. Data is recorded in Ohms.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
Resistance Sensor Specifications
|Resistive Range (in Ohms)||0 – 145000|
|Specific Resistive Ranges (in Ohms)||0 – 530, 530 – 3500, 3500 – 27200, 27200 - 145000|
|Resolution||2047 Unique Values Per Specific Range (11 bit): ~.25, ~1.71, ~13.3, ~70.8.|
|Accuracy||+/- 3% FS of Specific Range|
|User Calibrated Accuracy||+/- 1.5% FS of Specific Range|
|Lead Wire Length||1 ft. ( 12 in.)|
|Weight||0.7 oz. (19.84 g) with 3 ft. (0.91 m) lead|
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)