The Intermatic ST01 is a professional-grade 7-day programmable in-wall timer designed for heavy-duty applications ranging from 120 VAC to 277 VAC. As the direct replacement for EJ351C, this unit offers a significant upgrade in scheduling flexibility with up to 42 ON/OFF operations per week. Engineered for versatility, it features an astronomic clock that automatically adjusts for seasonal sunrise and sunset transitions and handles Daylight Saving Time (DST) without manual intervention. The isolated switch design allows this heavy-duty digital timer to control almost any load type, including LED, CFL, incandescent, and inductive motor loads up to 1 HP. Contractors will find the no-neutral wire required installation a major advantage for retrofitting older junction boxes where a neutral may not be present. The unit also supports single-pole or 3-way configurations, making it a reliable standard for both residential and commercial lighting or HVAC circuit control. Key Benefits for Installers Multi-Voltage Capability: Operates on any voltage between 120V and 277V, reducing the need to carry multiple SKUs. Universal Load Compatibility: Controls 15A resistive loads and 1 HP motors, ideal for fans, pumps, and high-efficiency lighting. Retrofit Friendly: No neutral wire connection facilitates faster installs in existing buildings. Power Outage Protection: Features a replaceable CR2 lithium battery to maintain time and non-volatile memory for programmed schedules. Enhanced Security: Includes a random mode to vary schedules, providing a lived-in appearance for vacant properties. Common Questions & Technical Support Does the ST01 require a neutral wire? No, the Intermatic ST01 is specifically designed to function without a neutral wire, making it an ideal switched outlet timer or lighting control for older wiring systems. Is this unit compatible with 3-way switch setups? Yes, it is fully compatible with 3-way switch configurations, allowing for control from two different locations when wired with a conventional toggle switch. How do I resolve the "BATT LOW" message on the display? The "BATT LOW" indicator signifies that the internal CR2 lithium battery needs replacement. This battery ensures the digital in-wall timer maintains its internal clock during power loss. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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