Tempsc

So. To understand correctly. Each of the Optex units (transmit and receive) are wired back to the panel? Is there a type of unit which operates on a reflection type basis ie: with less wires to run?

Hi Aissecur. So. The Optex beams would only trigger an alarm when broken by 'humans' that cross the beam and not some other form of movement within the marquee due to weather buffeting for example? We would position them to ensure no chance of beam break by tarpaulin (marquee panels) for example. Ref what it would trigger....my thoughts are that a simple siren would be sufficient to deter opportunistic intruders and would also alert those who sleep there each night too. On previous occasions when we have had a 'unwelcome visitor's, an unambiguous response has been sufficient. Thanks for any further guidance.

I'm confident we could install very solid supports for any device which would be secured to the ground and totally independent of the marquee structure itself. I'd be really interested in learning more about the free standing towers too. Is there a link available please?

Thanks Norman. So, would I be correct in assuming that if the (PIR?) detectors we're masked to only cover the ground, they would be OK and only alert on detection of someone crossing within its detecting area/range as I'm assuming that the ground won't move? Would it be a similar case with IR beams too as I assume that any movement of the marquee would have to break the beams? If I positioned correctly......?

Hi all. Thanks for the responses. So. Yes, we do have power in the marquee and some limited CCTV inside too. For info, the marquee is only up for 10days a year for a charitable event. Rather than exterior mounted equipment, I'd prefer interior such as the IR suggestion by sixwheeledbeast or even interior PIRs. On a related note, due to the exposed site, the marquee does take quite a buffeting and thus the frame, although securely staked down, does have some movement. If I attached the IR beam system or the PIRs to it and the frame moved, would this create a false detection? Do the detectors only activate when sensing heat as opposed to movement? If so, I'm guessing we could just drive separate fixtures into the ground, independent to the marquee itself, to mount either type of detector? Thanks for any further advice.

Just to clarify my above post. We are looking to protect the main marquee area. There is a small adjacent marquee which is where the two overnight individuals always sleep and that area isn't needed to be protected - only the marquee main area thank you.

Hi. I have a possibly challenging alarm installation enquiry. At a charity event we have erected a large aluminium framed marquee which is manned at all times 24 hours a day. In the early hours of this morning a person attempted to gain entry to the marquee and was disturbed by the people who were in the marquee overnight. We have some expensive equipment in the marquee and our insurance requires that the marquee is manned at all times. Due to the attempted intrusion we have begin to think about the possibility of installing a temporary alarm. I wondered whether a scaffolding type alarm might be useful which would be mounted on independent scaffolding poles driven into the ground rather than the marquee frame as there is movement due to the exposed location it's erected on. Can anybody suggest or advise whether we're heading in the right direction with this or whether there are other Solutions that we could look at which would resolve our problem and protect both the equipment and the person's within the marquee overnight for any possibly intrusions. Thanks for your help and sorry for this very long winded enquiry.