September 22, 201015 yr Hi, I have the task of extending an alarm system to cover a small external cupboard and am after some advice with regards to the type of sensor to use. The cupboard is 3ft wide x 4ft deep x 4ft tall... not huge... it has one of those tubular 45w heaters installed that is nearly permanently on over winter. The cupboard is secured by a heavy duty wooden door and what looks to be a fairly decent lock. The cupboard houses about
September 23, 201015 yr You could use a pir but the risk of it be obctructed is high imo id probably look at using door contacts and vibration if req. alternativly you could lace the door and wall area etc.
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