ZCM-12 digital timers are used for timing functions in automation and control systems. Weekly programmers carry out output relay control operations according to program settings (day, hour). All systems have additional features, including a random function that can be used to simulate presence and a control input function that is used to change the mode of operation of the system using the external button. Housing design allows mounting on the TH 35 rail and possibly sealing the device. The design of the system guarantees battery backup of all settings without supply voltage.