Digital Door Lock D300 now is up to new model. The brand new D300 is upgrade to the touch screen keypad. With the password, RF card to unlock the door. The mechanical key is designed for the emergency access. New D300 is up to 130 different users. with the Zinc Alloy as the raw material which is also had a touch screen keypad and random password protection. The card induction area and overlap with the password numeric keypad, which can save the space makes the lock smaller. The D300 have a high quality black touch screen pad and all black lever handle, which is modern design. The D300 is suitable for any type of wooden door. The high quality mirror material, there is no more worry about leaving the fingermark on the lock. Through random password protection system, you can add any number before or after the real password. There is no more worry about the real password had been saw. The D300 make easy replacement for inner door. It does not require you to change your existing inner door latch bolt. Within 20 minutes you will be able to retrofit the D300 to your latch bolt. 4 piece of batteries can afford the D300 unlock 3,000 ~ 6,000 times. When the 4 batteries run off, there is a 9V battery backup power support can be used. The 9V battery can be charged on the ports to give the lock a temporary power for unlocking.