ST220 Mini Telephone Line Tester Linaman Tester Portable Line Detector Multi-function Obstacle Detection Instrument

ST220 Telephone Line Tester is a new kind of line fault tester with safetymulti 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 1 Dialing talk hook2 Checking wire pairs3 Test insulation or break faults of the line4 Pulse Tone switchKey Features 1 DTMF applying to GB T15279 942 High voltage alarm3 Low voltage warning4 Last number redial5 Special durable test clamp6 Automatic power off and energy save design7 Pocket size simple operationTechnical Specifications Insulation Impedance TestRange M 0 10General specificationsRing distance Km 1Line break resolution Km 3Weight kg 0 22Dimension mm 1465437Battery V 9 NOT INCLUDED Packageincludes 1 XTelephone Line Tester1 X Test CableDetailspictures