ENTR main unit ENTR™ motorized cylinder is a cylinder that is revolutionizing the residential security market. It makes existing residential doors smart, comfortable and more secure. The ENTR smart lock has a main unit that goes attached to a mechanical cylinder. You will have to choose the size of cylinder that best suits to your door (below you will find a diagram that will help you to know which size of cylinder you should order). The main benefits of this solution are the following:Just changing the cylinder it allows to open the door of the house with a remote control, a smartphone, a fingerprint reader or a numeric keyborad.Needs only 5 minutes for installation as any other cylinder, check it out in the following link."Wire the door leaf" automatically when closing the door.Beeps if you leave the door open.No wires required.For further information about the ENTR Smart Lock, visit the specific website: ENTR Smart Lock Downloads ENTRKITC_Installation_Instructions_1_TESA.pdf (.pdf, 6.5 MB) Close Biometric keyboardBiometric keyboard for ENTR Numeric keyboardTouch keyboard for ENTR Mechanical cylinderMechanical cylinder for ENTR