Monnit wireless voltage meters are capable of measuring the voltage off another device, battery, or sensor. This sensor is capable of measuring voltage up to 500 VAC by connecting the leads on the sensor to the positive and ground terminals of the device being measured.
Examples of interfacing devices include, but are not limited to: Strain Gauge, Pressure Transducer, RTD, Thermistor, or Thermocouple, Piezo Electric sensors, Photoresistor, Industrial Accelerometer, any kind of variable resistor, any kind of sensor that outputs a voltage, etc. If the device being measured is passive, the user must supply their own excitation voltage, as the Monnit sensor is a “voltage observer”.
WARNING: Use caution when interfacing to the Monnit Wireless Voltage Meter. Negative voltages, any kind of AC Voltages exceeding 600V WILL DAMAGE the electronics of the Monnit Wireless Sensor. Monnit is not responsible for troubleshooting, replacing or reimbursing damages incurred by disregarding this warning.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
Voltage Meter Specifications
|Calibrated Accuracy with Appropriate Offset||+/- (.5 VACrms + 1.5% of reading)|
|Response Time||40 ms|
|Resolution||.25 VACrms / .35 VDC/Peak Voltage|
|Lead Wire Length||2 Wires, 1 ft (12 in), Black (Hot), White (Neutral), 18 AWG (Custom lengths available upon request.)|
|Absolute Maximum Voltage||600 VAC RMS|
|Supported Operation Modes||VAC RMS (root mean squared)|
|Accuracy||+/- (1 VAC RMS + 3% of reading)|
|Resolution||25 VAC RMS|
|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 868 MHz Specifications
|Operating Frequency||868 MHz Operating Frequency|
|Certifications||CE Certified. Tested and found to comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and EN 60950.|
|Security||Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)|
|Device Range||Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*|