Mini Optical Power Meter Red Light Tester

This compact handheld optical power meter measures optical power from -70 to +10 dBm across ten standard wavelengths (850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 nm) using an InGaAs probe. It features a 3.7V 650mAh polymer battery with USB charging, enabling over 40 hours of continuous operation and automatic shutdown after 10 minutes of inactivity. Built with ABS housing and a sensitive internal chip, it delivers stable, reliable readings without warm-up time — supporting both linear (0.1%) and logarithmic (0.01 dBm) display resolution. Operating temperature ranges from -10°C to 60°C; storage range is -25°C to 70°C. Includes red light source for fibre continuity testing, RJ45 network tester, and built-in LED light — all in one portable device.