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DW-230D Dumbbell Shape Telephone Line Checker

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: DOWELL
  • Model Number: DW-230D
  • Power: Electronic
  • Usage: Test telephone line, Cable Test
  • Certification: CE/SGS
  • Product name: Telephone Line Checker
  • Environment noise: ≤60dB
  • Dimension (mm): 232x73x95
  • Weight (kg): ≤ 0.5
  • Relative humidity: 10%~95%

DW-230D Tel Line Tester is a new kind of line fault tester with safety μlti-functions capabilities. Besides the basic functions as a common Tel Line Tester, it also has functions of high voltage protection and polarity indication, and so on.

Products Information

Dimension (mm)


Weight (kg)

≤ 0.5

Environment temperature


Relative humidity


Environment noise


Atmospheric pressure



RJ11 assistant test cord × 1

0.3a fuse tube x 1

  • Dumbbell shape, small size, simple operation
  • Special Dumbbell shape design
  • Small size
  • Easy operation
  • Solid new materials for shell
  • Waterproof and vibration proof

  • Common telephone function: Dial, Ring, Talk
  • Mute
  • T/P switch
  • High voltage protection (by fuse)
  • Polarity indication by LED
  • Volume adjust
  • Pause
  • Store phone number
  • Monitoring function
  • Last number redial
  • Telecom Line Identifying (Telephone line, ISDN line, ADSL line)

  • 1.Hook—Open/close the tester key
  • 2.SPKR—Hands free function key(Loudspeaker)
  • 3.Unlock—Data key of override function
  • 4.Redial—Redial the last telephone number
  • 5.Mute—Press it, you can hear of the voice on the line, but others can not hear of you.
  • 6.*/P…T—“*” and P/T
  • 7.Store—Store the calling telephone number
  • 8.Memory—Telephone number extracting key and you can press one key to do quick dial.
  • 9.Dial key—1……9,*,#
  • 10.Talk indicator light—this light will be bright when talking
  • 11.H-DCV LED indicator— If there is high DV voltage on the line, the indicator will be light
  • 12.Data LED indicator—If there is living data ADSL service on the line when you do the data identification operation, the
  • data indicator will be light.
  • 13.H-ACV LED indicator— If there is high AV voltage on the line, the H-ACVA indicator will be light.
  • 14.LCD—Display telephone number and test result

Q: Are you trading company or manufacturer ?

A: We are factory.
Q: How long is your delivery time?
A: Generally it is 3-5 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below

 Email:   Tel: +86 574 27877377   Add: 15th Floor, Aolisai Building, No. 958, Qianhu North Road, Ningbo 315100, China.

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