The 411 on Occupancy / Vacancy Sensors and Their Technology catherine kise2017-03-31T11:11:59-07:00Does anyone even really know what “411” is anymore or have I dated myself? I digress… In offices buildings, lighting can account for 15%- 20% [...] March 30, 2017 By catherine kise General Knowledge Dual Technology Sensors, Occupancy Sensors, PIR, Ultrasonic Sensor, Vacancy Sensors Comments Off on The 411 on Occupancy / Vacancy Sensors and Their Technology Read more...