Voltage monitoring made easy

This sensor allows you to remotely monitor potential differences (voltage) between two electrical points. If voltage deviates from your pre-set limits, you’re alerted by email, text, or call. If a monitored value rises or falls beyond user-set thresholds, an alert is sent via text, email, or call. Know when essential appliances are operative (helpful for remote locations or decentralized operations).

Retrofit these sensors to legacy machinery, “dumb” devices, solar power units, or material handling equipment within 15 minutes. The sensors monitor the electrical status of assets at user-designated intervals. If this status deviates from a user-determined range during measurement, an alert is issued via text, email, or call.

Remotely Monitor Device Range

Monnit’s Wireless Voltage Meters read the voltage difference between two electrical points and reports back the measured voltage. It is programmed to sleep for a user-given time interval (heartbeat) and then wake up, convert the analogue data, mathematically compute the voltage, 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.

This sensor come standard with two replaceable AA batteries. The typical battery life is approximately 10 years.

WARNING: Use caution when interfacing to the Monnit Wireless Voltage Meter. Negative voltages, AC Voltages, or exceeding maximum voltage levels (as outlined in product specifications) WILL DAMAGE the electronics of the Monnit Wireless Sensor. Monnit is not responsible for troubleshooting, replacing or reimbursing damages incurred by disregarding this warning.

Features

• Impressive wireless range of up to 1,200 feet through walls
• Frequency-hopping spread spectrum (FHSS)
• Improved interference immunity
• Improved power management for longer battery life
• Encrypt-RF® Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)
• Over-the-air updates
• Free iMonnit basic online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email
• Stores 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through the power cycle)
  • 10-minute heartbeats = ~ 22 days
  • 2-hour heartbeats = ~ 266 days

Applications

• Appliance Monitoring
• Line Power Monitoring
• Power Coupling Monitoring
• HVAC Systems Monitoring
• Power Supply Monitoring
• Backup Generator Monitoring
• Machine Motor Monitoring
• Battery Health
• Electrical Motors
• Blower Motors

 

Gateway Options for Seamless IoT Data Communication

Monnit offers a range of gateway options designed to facilitate wireless sensor data communication within IoT networks. These gateways, serve as crucial conduits for transmitting sensor data to the iMonnit software platform and play a pivotal role in ensuring seamless and efficient data transmission for IoT applications.

Click here to explore the diverse range of gateway devices available >>

Manage Your Monnit Sensors with iMonnit Cloud-based Software

Monnit’s Sensor Monitoring Software, iMonnit, stands as a cutting-edge cloud-based platform and central hub tailored for the seamless management of Monnit sensors. With a focus on data security, all information is safeguarded on dedicated servers running Microsoft SQL Server. This intuitive online user interface serves as a command centre for arranging, monitoring, and modifying device settings to suit individual requirements.

OneTemp provides complimentary activation and setup services for new iMonnit accounts, while a free mobile app empowers users to maintain control at all times. Whether opting for the basic version or upgrading to iMonnit Premiere, users can unlock the full spectrum of features that enrich the Monnit experience.

Click here to explore the software options >>

 

Technical Information – 0-5VDC Voltage Meter
Supply Voltage	2.0-3.8 VDC (3.0-3.8 VDC using power supply) *
Current consumption	0.2 μA (sleep mode), 0.7 μA (RTC sleep), 570 μA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and batteries)	-18°C to 55°C (0°F to 130°F) using alkaline -40°C to 85°C (-40°F to 185°F) using lithium
Optimal battery temperature range (AA)	+10°C to +50°C (+50°F to +122°F)
Voltage range	0-5 Volts DC**
Resolution	~1 mV
Accuracy	+/- (0.006 VDC + 3.0% of Reading)
User-calibrated accuracy	+/- (0.003 VDC + 0.5% of Reading) ***
Open-circuit voltage	~0.00 Volts
Max rated input	10 Volts
Input impedance	13 kOhms
Lead wire length	2 Wires, 1 ft (12 in), Red (+), Black (-), 18 AWG (Custom lengths available upon request)
Datalogging	Datalogs 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through the power cycle): – 10-minute heartbeats = ~ 22 days – 2-hour heartbeats = ~ 266 days
Wireless range	1,200+ ft non-line-of-sight
Security	Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight	3.7 ounces
Certifications	900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product 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

* Hardware cannot withstand negative voltage. Please take care when connecting a power device.
** The sensor is capable of measuring above 5 volts but may not meet the specified accuracy above this value.
*** For best results calibrate at a voltage between 50% and 90% of the voltage range.

 

Technical Information – 0-10VDC Voltage Meter
Supply Voltage	2.0-3.8 VDC (3.0-3.8 VDC using power supply) *
Current consumption	0.2 μA (sleep mode), 0.7 μA (RTC sleep), 570 μA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and batteries)	-18°C to 55°C (0°F to 130°F) using alkaline -40°C to 85°C (-40°F to 185°F) using lithium **
Optimal battery temperature range (AA)	+10°C to +50°C (+50°F to +122°F)
Integrated memory	Up to 512 sensor messages
Wireless range	1,200+ ft non-line-of-sight
Security	Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight	3.7 ounces
Certifications	900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product 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

*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

 

Sensing specifications (0-10 voltage meter)
Range	0 – 10 V*
Accuracy	+/-(2.0% of Reading + .002 V)
Calibrated Accuracy	+/-(0.5% of Reading + .002 V)**
Resolution	1 mV
Input impedance	247 kOhm
Open circuit voltage	~0.000 Volts
Max rated input	20 Volts
Lead wire length	2 Wires, 1 ft (12 in), Red (+), Black (-), 18 AWG (Custom lengths available upon request)

* The sensor is capable of measuring above 10 volts but may not meet the specified accuracy above this value.
**For best results calibrate at a voltage between 50% and 90% of the voltage range

 

Technical Information – 0-200VDC Voltage Meter
Supply Voltage	2.0-3.6 VDC (3.0-3.6 VDC using power supply) *
Current consumption	0.2 μA (sleep mode), 0.7 μA (RTC sleep), 570 μA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and batteries)	-18°C to 55°C (0°F to 130°F) using alkaline -40°C to 85°C (-40°F to 185°F) using lithium **
Optimal battery temperature range (AA)	+10°C to +50°C (+50°F to +122°F)
Absolute maximum voltage	250 VDC
Accurate range	0 to 200 VDC **
Accuracy	+/- (.1V + 1% of reading)
Calibrated accuracy	+/- (.05V + 5% of reading)
Input impedance	1.33 MOhm
Response time	100 ms
Leaded wire specification	2 Wires, 1 ft. (12 in), Red (+), Black (-), 22 AWG (Custom lengths available upon request)
Integrated memory	Up to 3200 sensor messages
Wireless range	1,200+ ft non-line-of-sight
Security	Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight	4.0 oz.
Certifications	900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product 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

* Circuit cannot withstand negative voltage. Please take care when installing batteries.
** If application exceeds 200 VDC the sensor will return a maximum reading of 200 V.
*** Operation mode must be specified at time of purchase.

 

Technical Information – 0-500VAC Voltage Meter
Supply Voltage	2.0-3.6 VDC *
Current consumption	0.2 μA (sleep mode), 0.7 μA (RTC sleep), 570 μA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Operating temperature range (board circuitry and batteries)	-18°C to 55°C (0°F to 130°F) using alkaline -40°C to 85°C (-40°F to 185°F) using lithium
Optimal battery temperature range (AA)	+10°C to +50°C (+50°F to +122°F)
Accurate range	0-500 VACrms
Absolute maximum input voltage	600 VACrms
Accuracy	+/- (1 Volt + 2% of reading)
User-calibrated accuracy	+/- (.5 Volt + 1% of reading)
Resolution	.1 VACrms
Input impedance	2 MOhm
Response time	~1 Second
Leaded wire specification	2 Wires, 1 ft (12 in), Black (Hot), White (Neutral), 18 AWG (Custom lengths available upon request.)
Datalogging	Datalogs 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through the power cycle): – 10-minute heartbeats = ~ 22 days – 2-hour heartbeats = ~ 266 days
Wireless range	1,200+ ft non-line-of-sight
Security	Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight	4.0 oz.
Certifications	900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product 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

* Circuit cannot withstand negative voltage. Please take care when installing batteries.