Patent ID: 7030750

Claim:
A detachable entrance and exit gate with a combined commodity burglarproofing and small arms detecting system, comprising: a detachable entrance and exit gate with a pair of vertical type panels which are oppositely disposed inside of an entrance and exit door; a central processing unit connected with transmitting and receiving signal frequency coil portions; an image-receiving device, a warning flare and a photographing device which are controlled by the central processing unit, wherein the transmitting and receiving coil portions comprise: a small arms detecting transmitting coil portion and a commodity burglarproofing transmitting coil portion interiorly installed at one of the vertical type panels of the entrance and exit gate; and a small arms detecting receiving coil portion and a commodity burglarproofing receiving coil portion interiorly installed at the other vertical type panel of the entrance and exit gate; wherein a variation existing between a frequency zone of the small arms detecting transmitting and receiving coil portions and a frequency zone of the commodity burglarproofing transmitting and receiving coil portions can be largely established, resulting in no mutual interference.