1、FAST AND ACCURATE: No waiting for warm-up, just plug and play. Supports ‑50~+26dbm measurement, relative power calculation, and calibration function. 2、SENSITIVE AND RELIABLE: Features a sensitive chip and robust internal structure. Low battery consumption, supports 40 hours of continuous work. 3、COMMON INTERFACE: Offers 10 wavelengths and light source, 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 and SC, ST, FC adapter. Covers most communication technology maintenance requirements. 4、ENERGY-SAVING AND ACCURATE: Uses an InGaAs probe for accurate measurement, with 10-minute automatic shutdown for energy saving. 5、DURABLE ABS: Made with excellent ABS material, offering impact resistance, scratch resistance, and environmental friendliness. Item Type: Mini Optical Fiber Power Meter Material: ABS Probe Type: For InGaAs Wavelength Range: 850-1650nm Standard Wavelength(nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Automatic Shutdown Time: 10 minutes Power Measurement Range: -50~+26dBm Power Supply: Requires 2 x AAA batteries (not included) Package Includes: 1 x Optical Power Meter 1 x User Manual 1 x Lanyard Customer satisfaction is our top priority. If you encounter any issues with your product upon receipt, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best after-sales service.