[Automatic Lid-opening Trashbin]DZT-27-1 model：DZT-27-1 capacity： 27Ltr size： 37.0X27.0X51.0cm G.W.： 3.10KGS N.W.： 2.40KGS Lid： plastic Pail： plastic Inner Bin： plastic Instruction： Sensor Opening Trash Bin This Product is based on infra red ray induction. Four "D" size batteries are required, which last for 6 months. When your hand or some other objects are about 15cm away from the induction window of the dustbin, the lid of the dustbin will open automatically. After the rubbish have been thrown into the dustin,the lid will close automatically.