The Presto HeatDish keeps you toasty warm so there's no need to heat the entire room. The computer-designed parabolic reflector focuses heat output so it feels much warmer than convection heaters. The handy top-mounted thermostatic control provides an infinite range of heat settings and maintains the desired temperature automatically. The tip-over switch disconnects heater if tipped. In addition, a warning buzzer sounds if the heater is jarred or tipped while the heating element is energized. If overheated, heater shuts off automatically. The buzzer sounds until the heater is unplugged, cooled, and the power reset button is pressed. Red indicator light at base of heater tells you at a glance if the heater is plugged in.