The TFE-LW-13-N is an infrared motion sensing device made by Zeus Technology. It is an active infrared, wide-angle swiveling motion detector, which can detect and protect large areas from intruders. The sensor is designed to provide reliable, responsive, and accurate intruder detection, and is capable of detecting targets at up to five meters away in a 56-degree horizontal field of view. It also features a built-in LED indicator to indicate when the device is detecting motion.