Shandong Senter Electronic Co., Ltd.
Main products:ADSL2+Tester,OTDR,IPTV Tester,VDSL2 Tester,E1 Tester,PON Power Meter,Optical Power Meter,Laser Source,VFL,Optical Fiber Identifier,Cable Fault Locator,Telephone Line Tester
Contact Us
  • Contact Person : Ms. Liu Anthea
  • Company Name : Shandong Senter Electronic Co., Ltd.
  • Tel : 86-533-3589257
  • Fax : 86-533-3587522
  • Address : Shandong,Zibo,No.98,Wanjie Road, New&Hi-Tech Area, Zibo, Shandong, China
  • Country/Region : China
  • Zip : 255086

ST230D telephone line tester

ST230D telephone line tester
Product Detailed
Besides the basic functions as a common Tel Line Tester, it also has functions of high voltage protection and polarity indicatio Main Functions

Common telephone function: Dial, Ring, Talk


T/P switch

High voltage protection (by fuse)

Polarity indication by LED 

Volume adjust


Store phone number

Monitoring function

Last number redial 

Telecom Line Identifying (Telephone line, ISDN line, ADSL line)

Key Features 

Dumbbell shape, small size, simple operation

Special Dumbbell shape design

Small size

Easy operation

Solid new materials for shell

Waterproof and vibration proof

ST230D telephone line tester

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