Frost code 716 automatic liquid soap dispenser is ideal for all types of counter or vanity mounting. LED indicators for low battery and empty soap. AC adaptor included, comes with 60" (1.5 meter) cord. Can take 4 AA Alkaline batteries (not included). Battery life: 20,000 cycles or 1 year. Dispensing volume is 1 cc. Viscosity range 1-3000 cp. Activated sensor range: 3"-4". Unit offers quiet and consistent dispensing. Installation: 25mm (1") Dia. Hole required. Comes with detailed installation instructions. The threaded shaft length is 2 1/8", which should allow for installation into a counter up to 2" in thickness.