Home / Control Panels / Accessories / Central Processing Units (CPU) / Simplex 742-590 Simplex 742-590 $787.76 4100U/ES 2X40 Master Operator Interface Availability: Please Call for Lead Time Simplex 742-590 quantity Add to cart Request a Quote This product is already on your Quote Request Browse your Quote Request Factory NewBrand: Simplex FireAlarm.com Part #: 21395 Categories: Accessories, Central Processing Units (CPU) Manufacturer Part #: 742-590 Tag: PR Specifications Resources Resources Information Weight 1.00 lbs Condition New Brand Simplex Resources4100U Service Parts List Simplex – Data Sheet