ST230 Corded Telephone Line Tester lineman test set Lineman tester 

This telephone line test set is handset, portable and intelligent, which adopts advanced technologies such as intelligent CPU, IC & SMT technology. The ST230 has many functions like common telephone, caller ID, redial, intercom, line voltage/insulation (including earth)/break, checking wire pairs, monitoring. The ST230 is designed following the human engineering theory with the appearance style like barbell, which can be put on the shoulder. Besides, you can use the test leads and clips with switch-box.

FEATURES:

1. common telepnone(dial,talk,hook)

2. last number redial

3. caller ID

4. phone-to-phone intercom

5. alligator clip connection

6. High AC voltage warning

7. DC voltage disply

8. Insulation value display

9. Earth insulation value display

10. Line break display

11. Check wire pairs

12. High resistance monitoring

13. High AC/DC voltage test

14. Low voltage warning

15. LCD display in English

16. Handset operation

Key specifications:

1. DTMF applying to GB/T15279-94

2. Caller ID compatible with FSK/DTMF

3. High AC voltage alert

Photos for reference:

Technical Specifications