The newly redesigned T-21™ 1/4" steel chassis with multilayer corrosion protection ensures reliability and long lasting operation in the harshest of environments. Built-in heater with thermostat control, 115/230 AC operation, Viking’s true battery backup, increased lightning strike protection and smooth start / stop operation are all standard features. The T-21™ swing gate operator has a 5 Year commercial or 7 residential warranty and a gate capacity of up to 2000 lbs.The removable power supply box includes LED indicators and communicates to the VFlex™ LCD screen, displaying the status of the AC line, surge protection and fuses of the operator.