ICE works in the field of precision controls particularly in the environmental extremes of heat, cold and vibration. Additionally, the firm has developed circuits that pass the most stringent EMI and RFI requirements imposed on today's precision aircraft controls. ICE has completed the development and has a patent pending on a family of intelligent hybrid DC power switches. These compact devices start at five amperes and progress incrementally through a 200 ampere version. The 400 volt, 200 ampere version is the approximate size of a deck of cards, making it ideal for applications requiring compact size and reduced weight