Future Kit FK319: TELEPHONE PRIVACY PROTECTION
Detail:
• Suitable for home or official telephone line which has many telephone with the same phone number.
• Whenever 1 set of telephone is used or firstly picked up, the circuit will automatically cutting other lines off and circuit will be used till the connected line free.
• Without having rely on its power supply.
• Recommended housing : FB01
• PCB dimensions : 2.0” X 1.7”