טיימר מנתק שיחות טלפון מ 1 עד 20 דקות
- • This circuit will cut the phone line immediately after a prior warning for 2 seconds.
• After warning ,if do not put the line down within 20 seconds, the circuit will cut the line off and cannot use the line again within 10 seconds.
• Without having to rely on its power supply.
