This heat pad is a specially modified version of our home brew tray, and includes an aluminium plate bonded to the surface of the casing for better heat transfer to your fermenting vessel, and an electronic adjustable thermostat.  This allows you to set the temperature of the yoghurt to your exact requirements.

The thermostat has a range of approximately 20-60 deg C on the plate surface, although the exact temperature of your yoghurt will depend on the ambient conditions and the type and size of vessel used.