NFO Optical power meter - Device used for quick and easy testing of optical power in networks | The meter can be tested for wavelength values: 850/1300/1310/1490/1550 / 1625nm and adapters FC / SC / ST and 2.5mm UPP | The meter has the option of switching on the autometric energy saving option after 10 minutes at rest | Thanks to the rubber coated housing, the device is resistant to shocks and falls from a low height | Working temperature: -10 ° C +60 ° C | Accuracy: 0.01dbm | Power supply: 3 * AAA batteries