--- Παρόμοια ΚΙΤ ...
1059 TELEPHONE AMPLIFIER
1078 PROTECTION FROM MALICIOUS CALLS
1119 TELEPHONE LINE RECORDING
1122 TELEPHONE CALL RELAY
1125 PULSE TELEPHONE LOCK
1130 TELEPHONE "BUG" DETECTOR
1155 TELEPHONE SCRABLER
1167 TELEPHONE LINES PRIORITY SWITCH
1182 MUSICAL HOLD ON
1186 8 CH REMOTE CONTROL BY TELEPHONE
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A simple, useful and cheap solution with no need for external power supply, that shows you if the line is busy. It can also show incoming calls without ringing. Useful for old type telephones, but also for units put in parallel to show if someone else is using the line. V 9VDC PCB 30x61mm