The Greengate Two-way ceiling sensor 10-30VDC Class 2 Model 01-110 is a white, wired room sensor It is designed for indoor use and operates on 10-30V DC. Made by NOVITAS, this infrared sensor is compatible with Greengate brand systems and is ideal for monitoring rooms in homes or offices. With a sleek design and reliable performance, this ceiling sensor provides added security and convenience to any indoor space.