Hoping someone on here can advise me.

We have an Accenta house alarm, with main box and one RKP.

The garage has a single 6 core alarm wire running to it and a PIR hanging off that.

What I want to do is add a second RKP in the garage, but I cannot run another cable for it.

By my reckoning the existing PIR uses 4 wires (2 x PIR, 2 x TAMP). An RKP needs 6 wires (4 control, 2 x TAMP).

I am thinking I can run the PIR, PIR(TAMP) and RKP(TAMP) on a single zone, giving me the remaining 4 cores to use for the RKP control circuits.

I guess my questions are these:

1) Is this feasible or utter nonsense (I know it will leave TAMP disabled in day mode)?

2) Is the RKP TAMP a 'normally closed' circuit (like normal TAMP)

3) Is the PIR a 'normally closed' circuit? (Yes I think)

4) Are RKP TAMP's normally connected in serial?

Don't think it will work if the RKP requires 4 cores on it's own as you will need to power the PIR which will take 2 cores and have the signal which takes another 2 even if you ignored the tamper which would take up the final 2.

I have an Accenta myself, but I can't remember how the RKPs are wired in.

Ah. You are right - the PIR also has a 13v supply pair.

*******s.

yeh you will need to wire a seperate cable, on most intruder alarms i work on you have to jump from the old keypad wiring it in series

Will work is the keypad needs the same voltage as PIR

1st pair - supply voltage to PIR & keypad

2nd pair - PIR

3rd pair - keypad data

That just leaves the tamper to sort out, but do you really need that?

Hmmm, interesting. I had wondered about sharing the 13v.

I dont see why the TAMP could not also be wired up to the PIR 'normally closed' loop.

I will think about this tonight.

Hmmm, interesting. I had wondered about sharing the 13v.

I dont see why the TAMP could not also be wired up to the PIR 'normally closed' loop.

I will think about this tonight.

That's a common dodge wiring tamper in series with N/C loop - might not meet alarm (NACOS) standards for house insurance purposes - but have seen it done on Nacos approved commercial systems.

I have done a few alarms and generally the rkp has 4 wires which are connected to the rkp port on the panel, and the pir has 4 wires 12V DC + & - and the actual Normally closed or normally open alarm circuit

you might be able to change the PIR to a normal door contact that would just need 2 wires for the alarm circuit(and loop out the tamper for that zone back at the panel), and then use the 4 remaining for the RKP

Also dont forget to set that zone as an entry/exit zone so when it opens the rkp will start beeping for the code and not just set the alarm off

Dallan

I'm gunna stick a multimeter on the RKP power ports and see if they are 13v.

Failing that I can just get another control box for the garage and create a separate install.

Thanks for the advice everyone.