$4.27

ป้องกันการดักฟังโทรศัพท์บ้านจากเ
[FK319]

• 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”

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