Solar Power Meter and Totalizer - SPM1500

  • Solar Power Meter
    Solar Power Meter
  • Click to see meter running
    Click to see meter running
  • Connection drawing
    Connection drawing

This is a unique product designed, developed and manufactured by Sunair Power for inline power measurement from Solar.

 The SPM1500is a DC Wattmeter and Totalizer in one.  The LCD screen switches between live readings of Voltage, Current, Power and various parameters on one screen and then switches to a second screen to display totalized readings.  This is very useful in determining the state of your power supply system and will allow you to maximize the power harvested by Solar PV or Wind.

Click on the display screen to see how it works.


  • Measures energy (Wh), charge (Ah), power (W), current (A) and voltage (V)
  • Totalizes Ah and KWH for DC to let you see how much has been generated/consumed.
  • Accurate & precise – 0.01 A current and 0.01 V voltage resolutions
  • Measures peak Amps, peak Watts and voltage minimum (droop)
  • Rugged – handles 50 A continuous and 60 A peak at 30 V
  • 2.5SqMM multistrand insulated wire flying leads connect to input and output
  • Small & light with a tough plastic case
  • Acts like a wire so doesn't affect load performance. Precision Alu-Chrom current sensing resistor, with only 0.001 Ohms resistance and circuitry that draws only 17 mA
  • Factory calibration stores constants in EEPROM to compensate for component tolerances
  • Powerful, 8 MIPS micro-controller
  • Made in INDIA to quality standards
  • One-year warranty and complete user manual









Current (A)


0.01 A

Voltage (V)


0.01 V

Power (W)


0.1 W

Charge (Ah)

0 – 65Ah

0.001 Ah

Energy (Wh)

0 – 6500Wh

0.1 Wh


*Peak current only.  Not rated for continuous usage.