This heat pad is designed to keep your brew warm enough for a consistent fermentation. It has a power-on indicator and consuming only 25 watts of power is very economical to run. It has a thermally insulated base and is safe for using with both glass and plastic containers. Improve the quality of your beer and wine whilst reducing fermentation time with this electric heating pad. This kit contains Heat Pad and a UK specification 1.5m Mains power Lead.