The 15837 is a digital time switch designed for precise scheduling and automation. It features a 24-hour + 7-day programmable cycle with a lithium battery backup, ensuring a 3-year memory retention. The device supports a maximum of 42 switchings (or 84 in some configurations) with a minimum interval duration of 1 minute, allowing flexible control of connected loads. It includes an automatic winter/summer time changeover function for seamless time adjustments. The 15837 offers accurate timing with a precision of +/- 0.5 seconds per day at 25°C and is suitable for various automation applications requiring reliable time management.
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