This PON optical power meter is designed for the installation, operation and maintenance of fiber optic networks. Color LCD screen design, support measure and display of voice, data and video signals on the PON architecture at the same time, while testing the 1310nm uplink signal 1490nm and 1550nm downlink signal in the PON system. Support ten data storage, in the test interface, long press V/LOAD to save the current power value, short press V/LOAD to enter the saved value view mode. Features: PON optical power meter, suitable for the installation, operation and maintenance of fiber optic networks. LCD screen design, supports simultaneous measurement and display of voice, data and video signals on PON architecture. Simultaneous testing of 1310nm uplink signal 1490nm and 1550nm downlink signal in PON system. The removal port is designed for weak light remediation, and the release port is designed to check whether the optical modem is online. The USB power supplying port only supports charging power, with a rear bracket to facilitate the placement of desktop work. Support ten data storage, in the test interface, long press V/LOAD to save the current power value, short press V/LOAD to enter the saved value view mode. Self-calibration function, press EEF+SEL at the same time to enter manual calibration mode. Equipped with the timer shutdown function, in the shutdown state, long press the power button for 2s after the device is turned on. The power icon in the upper left corner of the interface indicates that the device will automatically shut down after 10 minutes. Short press and the power icon disappears, and the automatic shutdown function is canceled..Long press the power button for 2s and the device will shut down. Specifications: Name: PON Power Meter Material: plastics Optical interface: AngledPhysical Contacts, UPC (optional) Test wavelength: 1310±50nm / 1490±15nm / 1550±10nm Isolation 1310nm: -- / >40dB / >40dB Isolation 1490nm: >40dB / -- / >40dB Isolation 1550nm: >40dB / >40dB / -- Measurement ranges: -35 to +10dBm / -40 to +12dBm / -40 to +25dBm Measurement uncertainty: ≤0.5dB Insertion loss: ≤1.5dB Detector Type: InGaAs Display resolution: 0.1dB Fiber Type: SM 9/125m Reading value setting: 10 groups Optical Connector: SCIAPC Display: color LCD screen Data storage: 10 Data interface: Micro USB Power supplys: 3 * 1.5V AA batteries (included) Battery Lifespan: Standby > 20 hours; Measurement > 12 hours Operating temperature: -10 to +50 Storage temperature: -40 to +70 Relative humidity: 0-90% without condensation Item size: 180 * 100 * 50mm / 7.09 * 3.94 * 1.97in Item weight: 150g / 5.29ounce Package size: 210 * 122 * 70mm / 8.27 * 4.80 * 2.76in Package weight: 581g / 20.49ounce Packing List: 1 * PON Power Meter 1 * Storage Bag 1 * Guideline