Testo Pro Light Meter includes probe, battery and calibration protocol. In order to have good quality light, luminous intensity in the workplace, hospitals, offices or schools has to fulfill specific minimum guidelines. This can be checked using Testo Pro. Features: Multi-point or timed mean calculation Stores up to 99 file locations Logger function (3000 readings) Quick documentation on site on the Testo printer Memory: 3000 LCD, 4 lines Storage temperature: -20 to +70 °C Operating temperature: 0 to +50 °C Battery type: 9V block battery Battery life: 50 h Weight: 500 g Dimensions: 220 x 68 x 50 mm Material/Housing: ABS Probe type: Lux Meas. Range: 0 to +100000 Lux Resolution: 1 Lux (0 to +32000 Lux), 10 Lux (0 to +100000 Lux) (Priced Per Each).