We offer Solar Power Meter with the following features: * Wide spectral range. * Excellent long term stability. * Cosine corrected. * Automatic transmission measurements. * Select either power or transmission. * Solar energy power or transmission. * Current time setting function * User calibration factor setting function. * End-mount light sensor. * Select either W/m2 or Btu / (ft2*h) units * Data Hold / MAX / AVG modes.