uFunction of checking cables: fast find out the twin cables in need among so many cables in no time (hint of sound, at the same time, has high shine glitter of induction indicator light)
u Sensitive: induction distance less than 20 mm, strong anti-jamming ability
u Function of verifying cable: can fast test the basic physical connecting feature of open, short cross and more(emitter and receiver can show line state at the same time)
u Cable state testing:
1) Line DC detecting and anode, cathode determinant
2) Bell signal detecting
3) Open, short and cross testing
u Volume regulate function: accord needing regulate the sound magnitude
u Function of speed regulating: choice speed on testing
u Function of speed and frequency changing: choice speed on testing, choice frequency on looking