The Microwave Solutions MDU2000 motion detector unit is a miniature X-Band microwave transceiver that utilizes the Doppler shift phenomenon to "sense" motion.
The unit, housed in a metal can, features a dielectric resonator stabilized oscillator, which provides stable operation over a broad temperature range in either CW or low duty cycle pulse mode and an integrated homodyne receiver for enhanced sensitivity and reliability.
This module family is available with either a +5v or +3v supply voltage.