To provide a trespass report instrument of a low cost and little in malfunction, of which placement of high latitude is enabled easily, further, it is premised on being usable alone, which has a function able to transmit image data so as to be able to judge the existence of a trespasser surely, and which can be remotely operated.

A trespasser is detected with a human body detection sensor (7) which is included in a main body (2) and in which orientation of detection can be adjusted, and photographed automatically with a digital camera (3) with a stroboscope (4) which camera is sequentially operated with the sensor and whose imaging angle can be adjusted. An E-mail to which image data of the intruder are added is transmitted automatically to a previously designated mail address without delaying via existing cellular phone network or the Internet by using radio wave. The trespass report instrument is characterized in that remote operation is enabled, and it has a switching function of electric lights.