The LH2111 series of dual voltage comparators are two LM111 type comparators in a single hermetic package. Featuring all the same performance characteristics of the single, these duals offer in addition closer thermal tracking, lower weight, reduced insertion cost and smaller size than two singles. For additional information see the LM111 data sheet and National's Linear Application Handbook. The LH2111 is specified for operation over the -55C to +125C military temperature range. The LH2311 is specified for operation over the 0C to 70C temperature range.