Tel Line Tester

Brief Introduction

St220 Tel 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/t15279-94
● High voltage alarm
● Low voltage warning
● Last number redial
● Special durable test clamp
● Automatic power off and energy-save design
● Pocket size, simple operation

Technical Specifications


Insulation impedance test
Range (mω) 0~10
General specifications
Ring distance (Km) ≤1
Line break resolution (Km) ≤3
Weight (kg) ≤0.22
Dimension (mm) 146 54 37
Battery (v) 9