Allen 20mm Double Tii-on Block Select (See Table Below):AL-2022-TII-S 20MM DYNAMIC: DBLE TII-ON+SHAC - EACH When fitted to the battery

When fitted to the battery supply these modules look for sudden increases in voltage then switch into protection mode to absorb and suppress the high energy spike

For hull protection on steel boats in seawater

Battery temperature sensor: included

high-build

Allen 20mm Double Tii-on Block Select (See Table Below):AL-2022-TII-S 20MM DYNAMIC: DBLE TII-ON+SHAC - EACH When fitted to the battery20mm Double Tii On block The 20mm Dynamic ball bearing block is a new range, suitable for numerous applications. Patented dynamic ball bearing technology utilising high quality 316 stainless steel ball bearings running on a stainless steel axle provides an unsurpassed dynamic load carrying ability. A rope friendly, smooth stainless steel ring in the top of the block holds it together providing maximum strength and durability under load whilst