Features ★ 10 WAVELENGTH AND SC FC ST ADAPTER: Fiber optic power meter contains 10 wavelength, 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 nm and with SC FC ST adapter. ★ AUTOMATIC SHUTDOWN FUNCTION: Optic power net cable wire tester has 10 minutes automatic shutdown function and fast and accurate. Give you a more accurate numerical reference. ★ INTERNAL 650MAH BATTERY: Net cable tester optical power meter adopts sensitive chip and rugged internal structure. Low battery consumption. Capacity internal 650mah internal 3.7V Li ion battery. ★ CALIBRATION FUNCTION: No need for you to wait for warming up for this meter. Our optic power net cable tester can do plug and play with accurate measurement, relative power calculation, calibration function. ★ MAINTENANCE USING AND SUITABLE SCENES: Fiber optic power meter will be covering most of the requirements of communicating engineering maintenance. Suitable for garage and workshop. Specification: Item Type: Fiber Optic Power Meter Material: ABS Power Supply: Internal 3.7V Lithium Battery x 1, Capacity 650mah(Shipped With Battery) Power Measuring Range: -50 - +26dBm Probe Range: InGaAs Wavelength Range: 850-1650nm Standard Wavelength: 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm Display Resolution Linearity Display: 0.1% Logarithmic Display: 0.01dBm Operating Temperature: -10 - +60℃ Storage Temperature: -25 - +70℃ Auto Shutdown Time: 10 Minutes Battery Duration: Not Less Than 40 Hours Package List:1 x Optical Power Meter 1 x Instruction Manual 1 x USB Cable 1 x Lanyard Package List 1 x Optical Power Meter 1 x Instruction Manual 1 x USB Cable 1 x Lanyard