Description Function: 1. SCOPE OF WORK: Mini optical power meter, power measurement range -70-10dbm, wavelength range 850-1650nm, efficient and durable. 2. MULTIPLE FUNCTION: With fast and accurate measurement, you don't have to wait for a warm-up that ma relative power calculation and calibration function. 3. GOOD PERFORMANCE: Sensitive chip and solid internal design, low power consumption, automatic shutdown within 10 minutes, can work continuously for 40 hours. 4. COMPACT SIZE: The fiber optic power meter ma compact in size and covers most of the maintenance needs of communication engineering. 5. ABS SHELL: Hand-held optical fiber power tester , the housing is made of ABS material, lightweight, wear-resistant and aging-resistant, and ma a long service life. Specification: Item Type: Optical Power Meter Model: AUA M7 Material: ABS Power supply: 2 x AAA battery (battery not included) Power measurement range: -70~ 10dbm Probe Type: for InGaAs Wavelength Range: 850-1650nm Standard Wavelength (nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Display Resolution: Line Display: 0,1%, Logarithmic Display: 0,01 dBm Operating temperature: -10-60 ℃ Storage temperature: -25-70 ℃ Automatic shutdown time: 10 minutes Continuous battery life: not less than 40 hours List of packages: 1 x Optical Power Meter 1 x Lanyard 1 x User Manual