The MP-841 is a fully supervised, innovative and esthetically pleasing wireless sensor with exceptional transmission range and a dual element low noise pyroelectric PIR motion detector. This wireless pet immune PIR motion detector is supported by ZigBee Home Automation 1.2 and is capable of distinguishing movement between humans and pets using Target Specific Imaging™ (TSI) technology. The advanced True Motion Recognition™ patented algorithm allows it to differentiate between the real motion of an intruder and other disturbances for improved false alarm immunity. It is fast and easy install with no adjustments required and minimal maintenance needed due to its user friendly, no tools required battery replacement process. The MP-841 is also designed to harvest environmental data that can be sent to smart home systems.