... operation and high-precision measurement under laboratory. SAT-F5 Optical Multimeter is handheld and intelligent multi-function measurement instrument integrating with ... :650nm ,850nm,1300nm, 1310nm, 1550nm, 1625nm, 1490nm. It is the best selection for major engineering test operators and technicians. It is ... °C-10~+50Storage temperature°C-40~+70 SAT-F5 Optical Multimeter