Replace front door sensor

Barack Obama

Hi. The house alarm goes off now and again and when I go to switch it off it's the same problem - Front Door. This is completely erroneous - the bloody thing keeps going off in the middle of the night when the door is untouched :mad:

It's an Aritech alarm and there is a shock + contact sensor on the front door. So -
1. Can I bypass this for now by removing the sensor and tying the cables together?
2. Can I replace this with a contact only sensor?

Ta

KoolKid

Yes and yes.

Barack Obama

OK KK - thanks for the info. I removed the sensor, tied the ends of the two cables together and set the alarm (after adding the magnet). It wouldn't set - just kept displaying 'Leave Now'. I tried again by connecting the 2nd wire to the screw at the end of the magnetic contact - same result as above.

I tried one more time by including the resistor in the circuit and it now seems to be working. The question now is, if I was to get a contact only sensor, does it come with this resistor built in?

Jnealon

Just get a normal contact.
The colour coded ones only have resistors built in but these seem to be only special order

KoolKid

Barack Obama wrote: »

OK KK - thanks for the info. I removed the sensor, tied the ends of the two cables together and set the alarm (after adding the magnet). It wouldn't set - just kept displaying 'Leave Now'. I tried again by connecting the 2nd wire to the screw at the end of the magnetic contact - same result as above.

I tried one more time by including the resistor in the circuit and it now seems to be working. The question now is, if I was to get a contact only sensor, does it come with this resistor built in?

Can you post a pic of the device showing the terminals & the cable.

altor

Barack Obama wrote: »

Hi. The house alarm goes off now and again and when I go to switch it off it's the same problem - Front Door. This is completely erroneous - the bloody thing keeps going off in the middle of the night when the door is untouched :mad:

It's an Aritech alarm and there is a shock + contact sensor on the front door. So -
1. Can I bypass this for now by removing the sensor and tying the cables together?
2. Can I replace this with a contact only sensor?

Ta

It is more than likely the shock part of the sensor that is causing the fault. You should not have a shock sensor on a front door, only a contact. If you post a picture of the sensor that you have installed there may be a way to connect just the contact part of the sensor rather than having the two connected. It might save you having to buy a contact if the fault is with the shock part of the sensor.

Barack Obama

Thanks again guys. Here's a pic of the sensor. It works ok if I include the resistor in the circuit so basically I'm looking to replace it with a contact-only sensor. So, will this include the required resistance or do I need a special type?

Any idea where to buy? I'm just looking for a small brown one!

KoolKid

To Wire your sensor as a contact only use as this :



To wire a regular contact


The yellow is the resistor.
You are aware these devices are not tampered?
To purchase these or other contacts check out the suppliers skicky.

altor

Barack Obama wrote: »

Thanks again guys. Here's a pic of the sensor. It works ok if I include the resistor in the circuit so basically I'm looking to replace it with a contact-only sensor. So, will this include the required resistance or do I need a special type?

Any idea where to buy? I'm just looking for a small brown one!

That is because the zone is set up for single end of line. The panel thinks the zone is open without the resistor. I would try using the contact side of the sensor but if you want a brown one then you will have to buy one, just ask for a brown contact. Most sensors do not come with the resistor built in but you can use the one you have with the new sensor.