PIR (Passive Infrared) sensores are used to detect motion within a distance of approx. 7 meters. The sensor has an adjustable delay and adjustable sensitivity.
Grove - 6-Axis Accelerometer & Gyroscope is a cost-effective Grove sensor integrated with a 3-axis digital accelerometer and a 3-axis digital gyroscope.
The Grove - Mini PIR motion sensor is a compact, low power and cost effective PIR sensor which is suitable for applications with relatively less detection distance requirements.
The Grove - IMU 9DOF (lcm20600+AK09918) is a 9 Degrees of Freedom IMU (Inertial measurement unit) which combines a gyroscope, accelerometer and electronic compass.