2pcs HW-MS03 High Performance Motion Sensor Module Radar Motion Sensor 2.4GHz to 5.8GHz Microwave Radar Sensor Module for Arduino

Unbiased of temperature, humidity, airflow, mud, noise, brightness, sturdy anti-interference capability
The microwave module is a field-shaped transceiver sign with broad protection and no blind spots
The induction impact of microwave within the transmission course of is comparatively good
when used indoors, the impact is best, when used outdoor, the sensing distance is barely decreased or the sensitivity is barely weaker as a result of affect of the atmosphere.
Utility: Safety monitoring, clever management system, lighting home equipment (garages, corridors, roads, and many others.)