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The Intermatic DT200LT controls a compatible landscape transformer with one daily on/off schedule. Set it to follow dusk and dawn or choose fixed times; automatic daylight-saving adjustment reduces seasonal resetting.
This timer switches the transformer input; it does not replace the transformer. Check the transformer timer compartment, plug arrangement and applicable load rating. Its battery backup preserves clock/settings, while the lighting load still requires mains power. Use the manufacturer instructions for initial location and schedule setup.
Manufacturer specifications and guidance
