The Thermasonic® Gel Warmer rapidly heats ultrasonic gels and continuously monitors temperature. Suitable for wall or countertop use The heater has a microprocessor that maintains a constant temperature. Additionally, a "thermal cut-off" prevents overheating. Due to its high density and impact resistant composite material, Thermasonic® is very safe in all environments. In addition, the plug and power cord are certified for hospital use. Finally, Thermasonic is environmentally friendly and consumes low power. Return Policy30 Day Return Policy. Free Return. 60 Day warranty, money back guaranteed!