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kagz100

urgent help with PIR

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In my situation we have a mixture of pir and cameras covering the perimeter but I want to integrate both to work together . I understand some concept with PIR but not the networking technical aspect concerning with RS 485 cabling . Im trying to design the network architecture for the pirs and this is where im stuck . I want to know how does one terminate the cable . If there is a device that can terminate the cable from multiple pirs and convert the signal for Ethernet (UTP) use .

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PIRs do not use RS485... You have to connect them to the alarm inputs on your DVR, not on the RS485 port (that one is for controlling PTZ cameras).

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