i have wired a scanny using EOL. I have a double front door and have two mrc on the same zone. How do i wire the two resistors to work. I have done it before but have completly forgotten. Thankyou all for your time.

Only the last sensor in a chain should have a series (tamper) resistor fitted, all sensors have a parallel resistor across the alarm contacts. All the alarm and tamper contacts on a specific zone are wired in series.

Edited March 31, 200917 yr by chexsec

If I remember correctly, you can't do it the conventional way on a Scanny panel (ie last contact with the 2k2 EOL and 4k7 across the reed, all the other contacts with just a 4k7 across the reed) as it does'nt like it when both doors are open.

You may have to do it using the "third wire" method, where you use one 4k7 and send it across both contacts. Not the best way to do it though. Can't go to detail in the public area.

You may have to do it using the "third wire" method, where you use one 4k7 and send it across both contacts.

QFA

Well now we have told the 3rd wire method its no longer a secret lol

If you wire the 1st contact as per normal all you have to do is wire the second contact as if it were double pole wiring then wire the tamper pair in series with the pair from the 1st contact. Wire the 2nd contact pair in series with the reed on the 1st one.

In other words the shunt resistor will shunt both reeds.

Probably easier if you totally ignore the above and just draw it out!!

The imporatnt bit is you need to run a 4 core from the 1st to the 2nd contact.

The imporatnt bit is you need to run a 4 core from the 1st to the 2nd contact.

As they dont make a 3 core cable pmsl

As they dont make a 3 core cable pmsl

well not in sizes small enought to fit in a standard smc anyways!

well not in sizes small enought to fit in a standard smc anyways!

LOL Did`nt mean 6mm T&E ..............

pmsl

LOL Did`nt mean 6mm T&E ..............

pmsl

re the 6mm