Bionare, A Rival Co. Ceramic Office Heater, Motion Sensor, Gray - Stay comfortable in cold environments with this efficient office heater. Worry-free motion sensor automatically turns off the heat when no motion has been detected for 30 minutes. Energy-efficient design uses 40 percent less energy than standard 1500-watt heaters. Easy-to-use digital controls let you quickly adjust between two heat settings for a customizable level of comfort. Small, compact design is perfect for desk spaces.