San Jamars Smart System with IQ Sensor T1490TBK Electronic touchless dispenser, 8" wide roll (200 mm) dia. and 4" dia. (100 mm) stub roll, Adjustable Paper Length (S, M, L) Adjustable Paper Delay (0, 1.5, 3 seconds) Towel Presentation Options (Sensor or Towel Out), Long Battery Life, Takes 4 "D" Batteries (Not included) (approx 80, 800' rolls)