$292.80 for YDR1211 Yale Digital Door Lock with Installation (Worth $488)

Strong locks are important, whether they're holding back hungry barbarian hordes at a castle gate or the secrets trapped in your little sister's diary. Give the right keys a brand new shackle with today's Groupon: for $292.80, you get one YDR1211 Yale Digital Door Lock with installation and 1 year's warranty (worth $488).

The Yale Digital door locks are three things: reliable, easy and convenient. Feel protected with the low battery operated invisible keypad that can be seen only when you touch the screen with your palm. The lock contains an 80dB alarm that goes off if foreign elements attemp to damage it or force the door open, and also if the lock detects any temperatures above 60 degrees celsius. The Yale series also automatically locks the door after checking that it is properly closed; but manual operation is also possible.

Spend your evenings with a Yale educated object and find daily security in this device that is well versed in the intellectual ways of the world.