A sensor system includes a camera having a first sensor configured to trigger the camera to take a photograph, a trigger device configured to couple to the camera, and a remote sensor node. The trigger device includes a heat generating member (HGM) disposed adjacent to the first sensor, a receiving node communicatively coupled to the HGM, and a housing configured to house at least one of the heat generating member and the receiving node. The remote sensor node is communicatively coupled to the receiving node, and includes a second sensor configured to detect an object in the field of view of the camera.