The HC-11LP-24V is a termopile infrared (Pyroelectric) sensor from TE Connectivity. It is a low-cost, low-power device for non-contact temperature measurement that combines a pyroelectric element with a dome Fresnel lens in one package. It is suitable for use in medical, security, automotive, industrial, and home automation applications. The device has a detection range of -20°C to +225°C and a spectral response of 8µm to 10µm, making it sensitive to body and environmental temperatures. The built-in thermopile element has an infrared radiation detection time of 0.25s. It features low-cost, direct analog voltage output, low power consumption, low noise, and wide operational temperature ranges. With a 24V power supply, it can operate continuously with the normal temperature range of 0°C to +50°C. It has a fast response, small size, and easy mounting, making it ideal for use in a variety of OEM settings and applications.