amr mohamed
Occupation: : 369 Date of Birth : 1994-09-29 Join Date : 2010-11-12 Age : 30
| Subject: Telephone line monitor Sun 03 Apr 2011, 8:47 am | |
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Telephone line monitor
Description of Service
Monitor the simplest phone line (and three elements of E) .. To know the status of the phone line is busy or not is
Circuit diagram | |
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