Detector:Ultra Fast Single Photon Counter Spectral Wave Range:380-630nm Display:LED,128×64 dots Data Storage:Max. 2000 measurements Relative Humidity:10-90 (no condensation) Temperature Range:+15-35°C Software:Built-in Microprocessor software, 6 users specific measurements protocols can be stored Interface:RS 232 interface for data transfer to the PC or printer Power:3 rechargeble batteries, or 230V/50Hz, or 115V/60Hz main power supply Sample fridge:Able to maintain condition and temperature of the sample in 15°C Dimensions:170*150*280mm(H*W*D) Weight:2kg (incl.batteries)