Geckos In.Xtend Keypad Extension System. This System Will Allow You To Install Your Topside Up To 200' From The Control (Depending On Topside Used). Compatible With:Controls: In.Xm, In.Xm2, In.Xe, In.Ye, In.Yt With Appropriate Software Revisions Topsides: K-5, K-8, K-52, K-45, K-56, K-72, K-73, K-85, In.K100, In.K3Xx, In.K4Xx And In.K6Xx Sold Separately:Ai#310822 Wire Cat5E (Bulk)Available In Complete Kit Ai# 3-72-7028K Which Includes Both Modules And 75 Cat5E Wire. Specifications Category: Topsides / Spaside Controls Subcategory: Accessories / Replacement Parts 0608-521014