A) Fiber Optic Handle Optical Power Meter -70 - +3 dBm， Alkaline BatterySpecifications:Model: PWA001Calibration Wavelength(nm): 800~1700Detector type: InGaAsMeasurement Range(dBm): -70，+3dBmUncertainty (dB): +0.2(5%)linearity (dB): 0.01Display resolution(dB): 0.03Frequency ID Hz: 270 330 1K 2KWave ID nm: 850， 980， 1300， 1310， 1490， 1550，1625Date Storage Capacity: 1000 Connector: FC/SC/ InterchangeableAlkaline batteryPower Adapter(V): 8.4Battery Operating time (h): 240 without backlightOperation Temperature(oC): -10(oC) +60Storage Temperature(oC): -25(oC)+70Dimension(mm): 172*82*33Weight(g): 310B)1mw Red Laser Light Fiber Optic Cable Tester Visual Fault Locator1. Central wavelength:650nm±10nm2. Emitter type: LD3. Output power: 10 mW4. Optical connector: 2.5mm universal connector5. CW frequency: 2Hz6. Power supply: 2 x AA Alkaline batteries7. Operating temperature: -10~+608. Storage temperature: -20~+709. Dimension: 168mm*27mm