Sell ST220 Mini Telephone Line Tester

Description

ST**0 Telephone Line Tester is a new kind of line fault tester with safety & multi-functions capabilities. Besides the functions as a common Tel Line Tester, it also has the functions of high voltage protection and dangerous voltage warning, etc.Main functions
●   Dialing, talk, hook
●   Checking wire pairs
●   Test insulation or break faults of the line
●   Pulse/Tone switch
Key features
●  DTMF applying to GB/T*******4
●  High voltage alarm
●  Low voltage warning
●  Last number redial
●  Special durable test clamp
●  Automatic power off and energy-save design
●  Pocket size, simple operation
Techinical specifications
 

Insulation impedance test
Range(MΩ)	0~*0
General specifications
Ring distance (Km)	≤1
Line break resolution (Km)	≤3
Weight (kg)	≤0.*2
Dimension (mm)	**6×*4×*7
Battery (V)	9