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? 

Just reading this post &  I agree that beams installed internally would be the way forward, I have always used OPTEX and found them very reliable.

Have you had any thoughts on what the alarm will trigger? Siren / GSM dialler etc, if there is expensive kit in there as you say then it may attract professional thieves

Edited August 7, 20187 yr by aissecur

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. 

No, Active IR is line of sight they would need installing where the line of sight would only be blocked by an intruder.

I would be installing them to an intruder alarm panel then you can arm and disarm and have somewhere to terminate and diagnose the zones if a fault occurred.

I concur with SWB, the optex units (dependant on choice) usually fire out dual IR beams, both of the IR beams are centimetres apart and have to be simultaneously tripped to cause a trigger event..

They come as a pair, One of units is the transmitter & the other a receiver,

I certainly would look at installing to an alarm panel as a minimum 

Beams are ok for a semi permanent install but if only for a few days? still a nice repeat install contract 

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? 

14 minutes ago, Tempsc said:

(transmit and receive) are wired back to the panel?

Yes

14 minutes ago, Tempsc said:

Is there a type of unit which operates on a reflection type basis ie: with less wires to run?

There wouldn't be less wires depending on the site and how its installed.

Reflection wouldn't be reliable or secure.

I have used optex and before that pulnix  reflection towers at the request of a cost  cutting customer   and the loss of range is minimal  but beam alignment is critical and not as secure .

The mounting surface needs  to be rock solid  as with any beam system if the unit is disturbed  it will not work

The portable system we used  involved a wooden   pallet set in concreate and then spiked into the ground  with a scaffold pole in the center and weld mesh  to protect the units one mounted at 2 feet and the  other at 3 feet  worked well and proved reliable  but not  the cost if only for a single use for a few days 

 

Would a motion detected cctv system be a cheaper and quicker install