Theben TR 644 top2

The Theben TR 644 top2 is a digital timer switch designed for use in various applications. It offers a range of features that enable precise control of electrical devices. With its 4-channel functionality and the ability to utilize both annual and astronomical programs, it is ideal for automating lighting and other electrical systems. The integrated interface for the OBELISK top2 memory card allows for easy PC programming, facilitating the customization of switching times and programs. The timer switch has a backup power reserve of up to 6 years thanks to a lithium battery and provides automatic switching between summer and winter time. Its extensive features, such as the astronomical switching function for calculating sunrise and sunset times, make it a versatile tool for time-controlled device management.

• 4-channel annual timer switch with extensive programming options
• Astronomical switching function for automatic calculation of sunrise and sunset times
• Integrated interface for OBELISK top2 memory card for PC programming
• Permanent switching and countdown timer for flexible control options
• Child safety lock and splash resistance for increased safety and durability.