Details -Free touch: Infrared sensor to make a very fast reaction in 0.25S -Materials: antibacterial housing to avoid germs stay -Spray volume: Adjustable liquid volume to suit high demands -Spray angle: Large spary range, liquid full surroud on your hands -Liquid tray: This extra part will catch the liquid residual to keep floor remains clean -Free installation: Stick it at anywhere -Power supply: one more choice, Battery operation and AC/DC adatpor operation Specification Plaza Series Hand Disinfectant Dispenser PL-151049S Unit Size L137*W109*H418mm Unit Weight 713.2g Material ABS Volume 600ml Sensing Distance 2-10±2cm Power Supply 4x“AA”batteries/power adaptor Colour - White.