Bionaire BSH3850-U SafetySmart Tower Heater Bionaire tower heater with safety laser sensor system; 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 Heater measures 22-4/5 by 13-4/5 by 11-1/3 inches and weighs 9 pounds upon shipping; limited 2-year warranty