LH2H-FE-DHK is a part number for a type of Panasonic Motion Sensor. This sensor is a cylindrical device used to detect the presence of an object or person within its range. The LH2H-FE-DHK is a PIR (Passive Infrared) type sensor, which means it uses a pyroelectric element to detect infrared radiation. It has an operating temperature range of -10°C to +50°C and is rated with a sensing range of 8 meters. The device is IP65 (Ingress Protection) rated, meaning it is waterproof and dustproof. This Panasonic motion sensor is designed for indoor/outdoor use and is capable of detecting a range of objects including humans and animals.