Alarm cable

Alarm cable. It is composed of multiple strands of copper wire, one of which is used for signal transmission and the other is used as alarm power supply. The advantages are simple installation, low cost, can be installed on the wall, and can easily realize alarm signal transmission.
twisted pair. It consists of two cables, one of which is used to transmit alarm signals, and the other is used to transmit alarm power or control signals. The advantages are long transmission distance and simple installation.