RFC570B-EIW-DAN is a type of Raystar Infrared (IR) Sensor made by Raytheon. It is a wideband, digital, 3-axis accelerometer that senses motion and tilt up to 24g in X, Y, and Z directions. It uses an I2C interface to connect to a host device, and is designed to be used in consumer electronics, automotive, and industrial applications. It can be used to detect motion, vibration, and tilt, as well as detect rapid acceleration.