The utility model discloses a multifunctional sensor contains controller module, infrared high definition digtal camera, rain -proof dust keeper, wind speed detection module, humiture detection module, adc, amplifier circuit module, GPS module, signal modulation module, signal demodulation module, particulate matter concentration detection module, video server, dust keeper 0 module, sound level detection module, dust keeper 2 and dust keeper 3, the utility model relates to a multifunctional sensor can carry out the remote monitoring to each item parameter of a plurality of sensor collections through the wireless network simultaneously, appears can in time acquireing the position that the sensor belonged to through the GPS module unusually when the parameter that detects, has practiced thrift manpower resources effectively.