Marks IQ1 I-QWIK Lite Digital Keypad Cylindrical Lock

awesome

Lock works great. Batteries are held in by a piece of plastic though that is prone to cracking (at least in the AZ heat) and making the unit inoperable. Marks USA does not sell parts to consumers so you must find a dealer that carries the part. The cheapest I could find was $15.20 with a $17 FedEx shipping charge (no USPS option). Seems expensive for a piece of plastic. Absolutely no assistance from Marks USA or concern whatsoever. I wouldn't give them business again for this reason. There are too many other options available.