The Codelock CL5010 Mortice Latch BS Heavy Duty is a modern electronic door lock made from durable zinc alloy material. With a 3 x 4 keypad and 8mm spring loaded spindle, this silver coloured lock offers classroom and storeroom functions. It features key override and front cylinder change capabilities, as well as a key unlock function for added security. Powered by 4 x AA cells, this unit from CODELOCKS is a reliable choice for enhancing the security of your property.