A quality Buler "LCD Door Peephole Viewer " with great LCD viewing angle, a large 2.8" LCD screen (not 2.5" like most other units) and a low light camera with a wider then normal angle lens. Most LCD door viewer monitors use low cost LCD panels that have very bad viewing angles so the elderly, shorter people or children can"t see the picture well on the LCD screen. This unit has a great viewing angle so tall or short you will be able to clearly see who is outside your door. Easy 5. min. installation with full detail instructions. New low power draw design can let you do up to 1,000 views on one set of two AA batteries. Why should I consider spending any money to get a LCD peephole viewer ... My door viewer works just fine........ FYI ...The following information is to alert you as you would have been if you had attended a local neighborhood watch group or police department meeting recently ( It was in the news in Chicago ) A gang was going from home to home and knocking on doors as homeowners would walk up to look at their peephole viewers the burglars would see the change in the peephole light and know the homeowner was home and was right behind the door now. If you didnt open the door they would kick open the door throwing homeowner on the ground and tying them up for home invasion robberies. With a LCD door viewer the people outside your door will never know if you are home, at the door or even viewing them now.