Cctv Building Site

[mikef]

I've recently fitted some cctv to my friends building site, but my friend wants to be notified on alarm but they have no phone line on site or internet, we have a samsung shr-6042 4 channel dvr with 3 x lrp3020 optex redwalls and I was looking to use a Menvier SD3 as he only lives round the corner from the site, but I've never used a DVR to trigger a dialler

I was thinking about using the redwalls to trigger a handy relay, and program the dialler for each redwall so at least if he gets two redwalls triggering he'll know its probably not a false alarm, but I'm unsure how to wire it up any suggestions?

[mma]

The dvr will probably have an alarm relay on the the back. I'd use that to trigger it. If you want each PIR to signal then put 0 volts through the alarm relay on the PIR. Have a permanent 12v on the relay and the 0 volts from the PIR relay to the 0 volts input. (so if the PIR opens it takes power off the relay) use 1 of the outputs off the relay for the dvr and the other for the dialler. Simplez.

[digitalwitness]

I must be missing something, genuinely sorry, I am not being sarcastic but it seems to me that you have most of the components of an alarm system(detectors and dialer) and wish to use a DVR as a panel without gaining the advantage of remote video.

I am not an alarm person, in fact I know little about them so I will admit maybe I am missing something but

Why not put in a panel along with the PIRs and dialer? The additional cost would not be huge but the flexibility would increase significantly, I would think.

Or would you consider using a 3G router instead of a dialer, you would still get notified of activations but would have the benefit of remote video.

Or if he lives around the corner, would a wireless link be possible and forget the dialer? He could still get notifications away from home as it could use his home broadband.

[mikef]

The dvr will probably have an alarm relay on the the back. I'd use that to trigger it. If you want each PIR to signal then put 0 volts through the alarm relay on the PIR. Have a permanent 12v on the relay and the 0 volts from the PIR relay to the 0 volts input. (so if the PIR opens it takes power off the relay) use 1 of the outputs off the relay for the dvr and the other for the dialler. Simplez.

Thanks I'll give the second option a bash

[mikef]

I must be missing something, genuinely sorry, I am not being sarcastic but it seems to me that you have most of the components of an alarm system(detectors and dialer) and wish to use a DVR as a panel without gaining the advantage of remote video.

I am not an alarm person, in fact I know little about them so I will admit maybe I am missing something but

Why not put in a panel along with the PIRs and dialer? The additional cost would not be huge but the flexibility would increase significantly, I would think.

Or would you consider using a 3G router instead of a dialer, you would still get notified of activations but would have the benefit of remote video.

Or if he lives around the corner, would a wireless link be possible and forget the dialer? He could still get notifications away from home as it could use his home broadband.

The site used to have two houses on, they have knocked the one down and are using the other as storage there is an old concept alarm panel that weve managed to reset it, and be able to set the alarm for the house, but weve searched everywhere but for the panel and can't locate it because theres loads of equipment in the way, we can only locate the keypad

I say he lives just round the corner, but its a few miles aways 5 miutes in a car

I think I'm going to try using the relays and see how we get on, thanks for your reply

[mikef]

The dvr will probably have an alarm relay on the the back. I'd use that to trigger it. If you want each PIR to signal then put 0 volts through the alarm relay on the PIR. Have a permanent 12v on the relay and the 0 volts from the PIR relay to the 0 volts input. (so if the PIR opens it takes power off the relay) use 1 of the outputs off the relay for the dvr and the other for the dialler. Simplez.

Thanks for your help we got he dialler working from the DVR, we tried it from the detectors and it worked fine but the problem we had was the dialler would be phoning when people were working on site, so we scheduled the dvr to only register an alarm between cerain times and used the output off the dvr and it seems to be working fine.

Thanks

mike