Dual technology motion detector that combines PIR technology with
microwave detection is suitable for protection of rooms with suboptimal
environmental conditions where drafts or intensive convection may occur. The
use of new microwave sensor operating and 24GHz frequency, together with 0402
SMD technology, allowed to design a dual technology device that fits into
a typical PIR enclosure. These makes GREY a great choice for
protection of rooms with a fireplace or hot-air heating systems, where the
appearance of the installation components is of the same importance as their
reliability.