â·ÃÊͺ¶ÒÁÃÒ¤Ò testo 545 light meter incl. probe, batteries and calibration protocol Testo 545 Light meter incl. probe, batteries 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 545. Multi-point or timed mean calculation Stores up to 99 file locations Logger function (3000 readings) Fast 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) Light meter Lux meter Testo 205 Testo 545 à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ