signstek digital electronic touchscreen keypad security entry door lock for left or right door handle with hidden mechanical key, matte black signstek <b>description:</b><br> <b>opening modes: </b><br> -. password<br> -. mechanical key (you can open the door using password or emergency key) <br><br> <b>features: </b><br> -. touchable password keypad<br> -. hidden mechanical keys<br> -. blue keyboard backlight<br> -. can be unlocked quietly<br> -. password privacy protection<br> -. motor-driven clutch<br> -. interchangeable door handle on left and right<br> -. american standard three-lock body<br><br> <b>note: </b><br> emergency key use: remove the keypad handle with a wrench. insert the mechanical key. turn the key clockwise until the door lock opens. (the key is for emergency use and the high torque is normal when it opens. <br><br> <b>specifications: </b><br> power supply: dc6v, 4 aaa alkaline batteries (not included) <br> quiescent current: ≤ 30ua<br> working current: ≤ 250ma<br> installation specifications: door thickness 1.38 to 1.97inch, 35 to 50mm<br> door edge to circle center distance: 2.36 to 2.76inch, 60 or 70mm (adjustable) <br> front plate size (l x w x h):5.12 x 3.07 x 1.18inch, 130 x 78 x 30mm<br> rear plate size (l x w x h): 5.12 x 3.07 x 0.98inch, 130 x 78 x 25mm<br> handle size (l x w x h): 5.20 x 1.18 x 1.89inch, 132 x 30 x 48mm<br><br> <b>package includes: </b><br> 1 x main unit<br> 2 x mechanical keys<br> 1 x hexagon screwdriver<br> 1 x user guide<br><br>