Irradiance Meter, Irradiance Measurement - Minimum 0 W/sq m, Irradiance Measurement - Maximum 1,999 W/sq m, Compass Bearing Range Not Applicable, Inclination Measurement - Minimum Not Applicable, Inclination Measurement - Maximum Not Applicable, Display LCD, Datalogging No, Number of Batteries 2, Irradiance Resolution 1 W/sq m, Auto Power Off Yes, Manufacturer Warranty 1 yr, Includes Batteries Yes, Recommended Battery Size AAA; LR03; MN2400, Maximum Operating Temperature 104 Degrees F