Applications: ->10km above high dynamic testing POV-510 visual fault locator is a high-performance, high-stability, high-output- power red light source, and that allows it testing much more longer fibers more accurately and simpler. It can satisfy all kinds of testing, ->3 ways of power supply, and reasonable power management, make it ?"Perpetual Motion machine" Power supply plays a very key roll for Instruments that are often used in field-testing. Long time battery operation and multi-kinds of power supply is very important. POV-510 high-performed visual fault locator provides Internal rechargeable lithium batteries, AA batteries and AC adapter. Also we set priorities to the 3 ways of supplies. So we can call the POV-510 series "Perpetual Motion machine",On the other hand, a lot of one-off batteries, whose unreasonable treatment and disposal lead to the worst pollution on water and soil over decades. The comprehensive and intelligent power supply and power management of the POV series make it "The greenest instrument (environment protection)". SPECIFICATION: Emitter type LD Wavelength(nm) 650 output(dBm) +3 Modulated signal Yes Optical connector Universal connector Auto off Yes Battery life 300hr Power supply Internal Lithium Rechargeable battery, AA battery and AC adapter Operation temperature -10 ~ +50 Storage temperature -40 ~ +70 Relative Humidity 0 ~95% Weight(g) 380g Dimension(H*W*T)