MS605 uses both Radar and PIR (Passive Infrared) sensors to detect motion and presence.

• Motion detection distance: up to 6 m

• Presence detection distance: up to 4 m

Detection angles:

• Motion detection: approximately 100°

• Presence detection: approximately 130°
  
  As the Meross Presence Sensor (Thread) uses multiple sensing technologies, please refer to the diagram below for a more detailed detection range.

  

  Red line: Radar-only detection range
  Black line: PIR + Radar detection range
  Blue line: Presence maintenance range