ACM6805 designed specially for family 、 garden 、 office 、 post office 、 bank and provider of system integrated , It can work on line adopting 485 general line for operation of system setting, maintaining, controlling, limiting authorization by PC Monitor. It also can ? work independently by card controlling, code setting time adjusting, working model, status setting with its own keyboard reaching to 30 or more operations.(without computer). It can connect with any controller of 6800 series when it work on line. For specification in detail, please visit our website: Thanks!