Hello i can probably solve this problem hunny. Ive got one and its never went off. First thing is you need to make sure the sensitivity is right, it can be adjusted but where your going wrong probably is that if your putting it in a cot you need to put down a bit of plywood for it to sit on as the slats make it uneven and go off. It does tell you somewhere in the brochure but you would think at the price they would include a bit of plywood too

hope it works for you xxx