The Yale Pro SL (YRD156 or YRD136) is a key-free deadbolt with Z-Wave Plus built-in, available in touchscreen or keypad models. It replaces a standard deadbolt in minutes using just a screwdriver and can be added to dozens of Z-Wave smart home and alarm systems with one-touch enrollment. The lock is 100% key free so it can't be picked and there's no keys to lose. To prevent lockouts due to dead batteries, there is a 9V battery terminal located below the keypad. The lock has a backlit keypad that wakes with a touch and has numbers that won't wear off. It's backed by a lifetime limited warranty on finish and mechanics, and a one year warranty for electronics. Get the premium Yale design and features seen in retail, with a product offered specifically to the pro channel.