The V44 Duo is a programmable codelock for one or two doors. It is possible to set separate codes for each door or the same code for both. V44 Duo also provides the option of door control and alarm output. The V44 Duo has a code capacity of 20 four-digit codes and 10 six-digit codes. By using the V44 Duo’s tamper switch in combination with the SK5 security unit, it is possible to achieve a higher level of security.