High performance detector, stable and reliable,High sensitivity,Multi-wave test, SMT, lightweight,Power supply by battery Specifications ModelDVP-2002A/BOptical detectorInGaAs/AttenuationWavelength850 ... )Power supply2 AA batterybattery life>100HOperating environment-20+55 095% no condensationStorage environment-40+70 095% no condensationDimensions62mm×22mm×110mmWeight0.1Kg Optical Power Meter ...