STEREO DOPPLER TECHNOLOGYIn 1980, a technological breakthrough in microwave signal processing termed "Stereo Doppler" was developed. This technology became the basis for Protech's high security military sensor designs. unlike conventional microwave sensors, Protech sensors can actually determine the exact distance in inches (cm) that a target must move to create a valid alarm signal. In addition, sensors equipped with Stereo Doppler technology can ignore vibration and randomly moving objects (swinging signs, overhead doors, moving displays etc.) as potential sources of nuisance alarms. The benefit is a higher level of security without the nuisance alarms. Models SDI-76MW and SDI-77MW are typically used in military and government installations.
Single technology: SDI-76XL-MW, SDI-77XL-MW