Bionaire BSH3818-U SafetySmart Heater Bionaire-made space heater with safety sensor; shuts down upon laser interruption Automatic LCD diagnostic panel illuminates when risk arises; back-up fuse provided With 1500 watts; 4-hour safety timer and automatic shutdown enhance safety For medium-sized rooms; thorough safety guidelines provided in enclosed manual Measures 12 by 8-1/2 by 8-1/2 inches and weighs 5 pounds upon shipping; limited 2-year guarantee