Re: PIR wiring Help

["Frank Mc Alinden" <armagh@xxxxxxx>]

Hi Mick

            Normally with an alarm panel there is an END OF LINE resistor connected in series with the alarm contacts AT THE PIR. Normally to add an extra pir you would just series the contact wires at the control box . Your explanation only mentions 3 wires,you would need 4 i believe . Have you got 4 wires at your pir? The tampers are series as well.

 

Frank Mc

----- Original Message -----

From: Mick Furlong

To: ukha_d@xxxxxxx

Sent: Saturday, June 08, 2002 12:40 AM

Subject: [ukha_d] PIR wiring Help

I am trying to wire up a number of PIRs to a Linux box which has specific digital inputs similar to homevision.

 

All works fine for a single PIR however I want to wire several on a single input so that any of the pirs triggering will trigger the input and also I want to wire the Tamper contacts in a similar way on a seperate input.

 

For a single PIR I have.....

 

Input               PIR

In+     to           C

+12    to            +

GND  to             -

 

In- on the input is linked to GND on the input

+ on the PIR is linked is linked  N on the PIR

and finally there is a 10k resistor between - on the PIR and C on the PIR

 

This all works fine but can someone please explain how I add additional PIRs?

 

Cheers

Mick

 

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