GARLAND REPLACEMENT 2619600 IGNITION CONTROL SPARK BOX COMBO RANGE STW286 STW28GARLAND REPLACEMENT 2619600 IGNITION CONTROL SPARK BOX COMBO RANGE STW286 STW28 has been designed for use with burners that operate at 24Vac, this is typically ovens such as Pizza ovens where a lower voltage is a much safer option due to user interaction. with new parts and improve its life and performance. We are confident with what we have developed that we give each unit a 1 year return warranty. This is for use with a single probe and two valve