Utilizes sensors which emit non-audible sound waves and sense movementAny movement within the sensor's field of view causes a shift in the original emitted frequency, the sensor identifies the change as movement and controls light accordinglyU/S models are immune to external ultrasonic signals from other sources such as white boards delivering uninterrupted performanceAuto-adapting time delay and sensitivity are continually adjusted to occupancy pattern of useDelayed OFF timer the sensor will turn lights OFF if no motion is detected after a specified timeExclusive Walk-through feature provides increased energy savings by not leaving the lights ON for an extended period after only momentary occupancyTime delay and saved settings are protected during power outages and will return to the last known stateIndustry exclusive self-configuring local manual switch input, momentary or maintained switches are supportedPresentation mode feature for slide or film presentations allows pushbuttons to turn lights OFF and keep them OFF while the room is occupiedManual switch and emergency override are class 1 and 2 circuits, class 2 circuits provided for flexibilityIndustry exclusive "fail safe" circuitry in the event of product failure, return to closed feature causes the relay to default ON which eliminates life safety concernsIndustry exclusive HIS (high inrush stability) technology designed to handle today's high inrush electronic ballast loads and offer unmatched durability and serviceRobust and reliable mechanically held 10 A latching relay provides dependability and robust performance for all load types and provides energy savings over electronically held relaysAdjustable time delayConfigurable for manual ON/automatic OFF or automatic ON/automatic OFF