Simply45 ST-158050 is a kit of 12 x RJ45 remote units (#1 - #12). ST-158050 eliminates the need to walk back and forth with multiple remotes while testing drops. Test and Map/ID up to twelve drops and/or locations at one time, increasing efficiency and saving time. Designed for use with all SimplyTEST VDV II and PoE PRO series testers.