ProTAACS Wireless RF Voltage Meter 0-500 VAC/VDC - AA Battery Powered

Voltage Meter 0-500 VAC/VDC

The Wireless 500 VAC/VDC Voltage Meter is an analog measuring device that reports the measured voltage on user specified intervals. The sensor has three operating modes, in which you can obtain the voltage measurement in VACrms (root mean squared), the peak voltage, or the DC voltage. The modes can be set by the user; the default mode measures VACrms.

  • Wireless interface for measuring voltage
  • Measures voltage up to 500 VAC/VDC

Free iProTAACS basic and iProTAACS Mobile apps for Android online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email


  • DC Voltage Meter
  • AC Voltage Meter

ProTAACS 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 ProTAACS sensor is a “voltage observer”.

The standard version of this sensor is powered by two replaceable 1.5 V AA sized batteries (included with purchase). This sensor is also available with a line power option. The line powered version of this sensor has a barrel power connector allowing it to be powered by a standard 3.0 – 3.6 V power supply (Included with Line Power option upgrade). The line powered version also uses two standard 1.5 V AA batteries as backup for uninterrupted operation in the event of line power outage.

Power options must be selected at time of purchase, as the internal hardware of the sensor must be changed to support the selected power requirements.

By connecting the leads on the Wireless 500 VAC/VDC Voltage Meter to the positive and ground terminals of another device, battery or sensor, it can measure the voltage and send data to the Online Sensor Monitoring and Notification System. The data is stored in the online system and can be reviewed and exported as a data sheet or graph. Notifications can be set up through the online system to alert the user when certain thresholds have been met or exceeded.

  • Wireless Range: 250 – 300 ft. (non-line-of-sight / indoors / through walls, ceilings & floors) *
  • RF Communication: 900, 920, 868 and 433 MHz
  • Power: Replaceable batteries (optimized for long battery life) Line-power options available
  • Battery Life (at 1 hour heartbeat setting): **
    • AA battery > 4-8 years
    • Coin Cell > 2-3 years.

* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.

  • Power Lines
  • Machinery
  • Electrical Motors
  • Generators

And many more…

Two replaceable 1.5V AA sized batteries are included with the standard model. A line-power version with battery backup is also available – allowing it to be powered by a standard 3.0 – 3.6V power supply and use the internal batteries if there is a power interruption.

Power options must be selected at time of purchase as the internal hardware of the sensor must be changed to support the selected power requirements.


If the sensor is not connected to the power source properly, it will appear that the sensor is broken. Please follow this wiring diagram to ensure proper performance and detection.

*Hardware cannot withstand negative voltage. Please take care when connecting a power device.
**At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory.
***Operation mode must be specified at the time of purchase.
****If application exceeds 500 VAC/VDC the sensor will return a maximum reading of 500V.

Other Standard AA Battery Sensor