Feature: 1. FIBER OPTIC LOSS TEST KIT: This kit contains optical power meter, optical light source, visual fault locator, ideal for test and maintenance. 2. ERGONOMIC DESIGN: The fiber optic tool is ergonomically designed, can be simply operated with one hand. 3. FALLING RESISTANT: The test tool has a silicone protective cover for shock and falling resistance, ensuring longer service life. 4. SIMPLE CLEANING: The set includes fiber end face cleaning box and paper, more convenient for fiber cleaning. 5. WIDELY USED: This kit contains common FTTH tools, which are widely used in fiber optic communication projects. Specification: Item Type: Fiber Optic Loss Tester Material: ABS Model: KLT 12E KPM 11M: Wavelength Range: 800-1700 (nm) Power Measurement Range: -70 to +10dBm, -50 to +26dBm Standard Wavelength: 850 980 1300 1310 1490 1550 1625 (nm) Battery: AAA x 2 (shipped without battery) KFL 11M: Power Range: 10mw Test Distance: 8-10km Wavelength Range: 650nm Modulation Frequency: CW/2Hz Battery: AAA x 2 (shipped without battery) KLS 25M: Wavelength: 1310+1550nm Output Power: -5dB Optical Connector: SC+2.5mm universal Modulation Frequency: CW, 270Hz, 1KHz, 2KHz Output Stability: ±0.05dB/15min ±0.1dB/8h Battery: AAA x 2 (shipped without battery). Package List: 1 x Optical Power Meter1 x Optical Light Source1 x Visual Fault Locator1 x Cleaning Platform1 x Large Alcohol Bottle1 x Small Alcohol Bottle3 x 1 Meter Jumper3 x Plastic Coupler1 x Shoulder Strap1 x Inner Lining EVA1 x Carrying Bag1 x User Manual