The FPM-55 from Jonard Tools is an InGaAs-based Fiber Optic Power Meter with an optical range from 800 to 1650 nm. It can measure power from -50 to +26 dBm with a resolution of 0.01 dB. This power meter can measure six preset calibrated wavelengths with high precision to determine absolute and relative power in fiber optic cables. This power meter can perform single-mode/multi-mode measurements and can be calibrated manually. It has an inbuilt data storage unit to record measurements.
The FPM-55 has an LED-backlit screen, a dust-proof button design, and a shatter-resistant sleeve for shock protection. It requires three rechargable AA batteries and can operate for more than 130 hours on a single charge. The power meter is available in a module that measures 6.89 x 3.54 x 1.75 inches with FC/LC/SC connectors and a nylon carry case.