ZCM-42 time programmer is used for automatic control of lighting, heating, drives or any other energy receivers. The timer allows creating weekly, astronomical and annual programs. Additionally, you can exclude selected days of the year (for example, public holidays) and assign them a separate work schedule. Two types of changeover inrush relays used allows the device to cope successfully with the LED-type load in complex systems. The innovative technology of device settings programming allows configuring via Wi-Fi from a web browser. The programmer offers also battery back-up of the real-time clock (RTU) therefore the programmer maintains stable operation in all conditions. The supercapacitor has been used instead of the conventional battery cells. ZCM-42 is a combination of innovative technology and robust design of electronics. The great advantage of the clock is the simplicity and speed of configuration. Programmed settings can be saved to the file and transferred to another programmer. It facilitates operation in the bigger systems. After connection with the Wi-Fi network established by the programmer, the user can manually switch on or switch off the clock relays. ZCM-42 is an energy-saving product - in standby mode the device draws less than one watt of energy.