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Item no. METIRI-S2


Item no. METIRI-S2
2 In stock

METIRI-S2 SMART ENERGY METER - Scientific Model Version 2

The Metiri-S2 Scientific Model is a smart energy meter that accurately measures DC voltage and current and records this energy over time in a way that you can customize for your application. The Metiri-S2 is an improved model of the original series and has some new and improved features:

  • Increased accuracy with a better display
    • Current detection range from 0.001A  to +/-100.00A (+/-50Adc Imax)
    • User settable display field
  • USB Data Interface
    • The Metiri-S2 can be powered by a laptop or other external USB power source AC adapter or external USB battery (Not included).
    • Update the firmware via free bootloader software
    • Record data or configure the Metiri-S2 with a serial UART client or via software interface
  • Better Wires:  The Metiri-S2 now has silicone pure copper wires
    • 105/30 or better with high strand count for extreme flexibility
    • UL3239 high temp silicone jacket rated to 150°C (302°F)
    • 99.9% pure copper wire (tin-plated)
    • > 7" wire leads

The Metiri-S2 includes all of the features of the original Metiri-S plus much more.

  • Touch sensitive buttons, nothing to break
  • MicroSD interface records data into easy to use CSV format
  • ​Better resolution and speed
  • ​Two temperature sensors
  • ​Better Design
  • Customizable Main Screen
  • Fully Certified to FCC Part 15, Class B for residential or commercial use
  • Real time voltage, current, power, and time
  • Interactive Energy graph shows energy performance over time
  • Solar Power Monitoring
  • RC Testing
  • Accurate Battery Monitoring
  • DC power data acquisition


  • Voltage monitoring range: 0* to 60 DC volts.
  • Bidirectional current monitoring:**
    • -50A to +50A continuous.
    • -100A to +100A peak.
  • Fully Certified to FCC Part 15, Class B for residential or commercial use.
  • Pure copper10 AWG wire and high quality sense resistor qualified to AEC-Q200
  • Saves measurements to a micro SD card in CVS format for easy editing. (micro SD card not included)
  • Real time voltage, current, power, and count.
  • Voltage, Current, and Power minimum and maximum values.
  • Interactive Energy graph shows energy collected per hour.
  • Self Calibration and data storage control.


  • You can provide axillary power using any 5.0V USB supply.
    Power your project using any AC charger, battery pack, or car charger with a USB port.
    (No custom cables or power adapters are included)


  • All menu options, features, and tools are accessible using the front interface.
  • You can set the energy units that you want to see. Select either Joules, Watt hours, or Ampere hours!
  • Perform calibration, reset values, monitor, and record data all with a touch of a button.


  • Record voltage, current, and energy over time in a simple to use CSV format. This data can then be easily analyzed in a spreadsheet program.  (micro SD card not included


* When auxiliary USB power is plugged in. Otherwise, unit will function with an input voltage of 6 up to 60 Vdc.
** The Continuous Current rating is the current rating the device can sustain. Peak Current is the current rating the device can sustain for 5 seconds. The Recordable Current is the maximum current the device can record. See product SOA (Safe Operating Area) in your product manual for more details.


  • Maximum Operating Values
    • Voltage Operation Range: +6.5Vdc to +60.0Vdc
    • ...with Aux Power Supply: 0.0Vdc to +60.0Vdc
    • Maximum DC Current: +/-50Adc sustained
    • Maximum Peak Current: +/-100A for less than 3 seconds
    • Input Current from Source or Load: 8mA to 149mA*
    • ...with Aux Power Supply: <1mA
  • Measurement Capabilities
    • Voltage Detection Resolution: 10mV
    • Current Detection Resolution: 1mA when less than 6.0A; 10mA othewise
    • Current Measurement Accuracy: +-20mA
    • Sample Resolution: 20Hz (one sample each 50mSec)
    • Clock Resolution: +/-0.5%
    • Ambient Temperature Range/Resolution: -40°C to 120°C +/-0.1°C
    • System Temperature Range/Resolution: -40°C to 120°C +/-0.1°C
    • Max Energy Recordable Value: +/-2,147,483,648 Joules (watt seconds)
    • Max Clock Recordable Value: 65,536 days
  • Recording Capability
    • MicroSD Card Size Capability: FAT32, up to 128GB
    • SELECT or ENTER Screen Timeout: 10 seconds


30 day satisfaction guarantee
Satisfaction Guarantee
Your satisfaction is important to us. If you're not satisfied, return the product within 30 days of purchase for a refund or credit.

Return policy
Free tech support
Free Tech Support
Circuit Specialists offers free technical support for the life of your product. Please call our technical team with any questions.

1-800-528-1417 ext. 3
Mon - Fri: 8:00 AM - 5 :00 PM (MST)

Some products must be specially ordered, usually resulting in a 1–2 business day delay. Please contact us for an estimated delivery date.