The Schlage CO-100 Series electronic cylindrical lock, model CO-100-CY-70-KP-RHO-626-LD-RH, is a standalone, manually programmable access control device designed for classroom and storeroom applications. It operates using a 3-6 digit keypad for PIN code entry and is supplied less cylinder, allowing for integration with a variety of conventional, SFIC, or FSIC cylinders for mechanical key override. In the classroom/storeroom function, the outside lever remains normally locked, requiring a valid PIN code for entry, while the inside lever always allows free egress. The lock manages up to 500 unique user PINs and is powered by four AA batteries, offering up to a two-year battery life. Constructed with pressure cast zinc levers and a satin chrome (626) finish, it features a standard 2-3/4" backset and accommodates doors 1-3/4" thick. This lock is ANSI/BHMA A156.25 Grade 1 certified, UL 294 Listed, ADA compliant, and fully outdoor rated for its function. It has an exterior operating temperature range of -31° to 151°F (-35° to 66°C) and 0-100% non-condensing humid