Check the listing for details. Optical Power Meter -70 to 10 DBm, Accurate 2.5mm Interface Portable. Condition: Used. Listed at 17.60 USD. Please note this is an open box. This will be shipped in a generic box. Please note this has not been used but it does have some scratches from shipping. Pictures provided for review. Features & details 【7 Test Wavelengths】This optical power meter supports 7 wavelengths, 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm. 【2.5mm Standard Interface】Equipped with 2.5mm standard interface, this optical power meter is commonly used for SC, FC, ST connectors. Supports Three Interfaces, Seven Wavelengths. 【Wide Measurement Range】This optical tester can provide from ‑70 to 10dB optical power measurement range. This optical power meter is well made with accurate measurement and low error. Use it with confidence! 【ABS Material】Using excellent ABS material, the optical power meter possesses impact resistance, scratch resistance.