Intermatic ST01 7-Day Heavy-Duty Programmable Timer 120-277V 15A with Astronomic Clock
Professional 7-Day Scheduling with Advanced Astronomic Features
The Intermatic ST01 7-Day Heavy-Duty Programmable Timer delivers professional-grade scheduling control with 120-277V compatibility and 15A capacity. This versatile white timer features advanced astronomic clock functionality that automatically determines dawn and dusk times, while supporting up to 40 ON/OFF events across a flexible 7-day programming schedule. The isolated switch design enables compatibility with any load type including AC and DC loads, making it ideal for diverse lighting and ventilation applications.
Professional Features & Benefits
- 120-277V Wide Voltage Range: Compatible with both residential and commercial electrical systems for versatile installation options
- 15A Heavy-Duty Rating: Handles substantial loads for reliable control of high-power lighting and ventilation equipment
- 40 ON/OFF Events: Extensive programming capacity allows complex scheduling for sophisticated automation requirements
- Astronomic Clock Feature: Automatically calculates dawn and dusk times for optimal lighting control without manual adjustment
- No Neutral Wire Required: Simplifies retrofitting and reduces installation time in existing electrical boxes
- Random Mode Operation: Varies ON/OFF schedule to provide lived-in appearance for security applications
- Universal Load Compatibility: Isolated switch works with incandescent, fluorescent, CFL, LED, and both AC/DC loads
Technical Specifications
- Applications: Air Movement & Ventilation;Indoor Lighting Control;Outdoor Lighting Control
- Country Of Origin: Thailand
- Depth: 1.813 in
- Input Voltage Rating Range S : 120-277 VAC, 50/60 Hz
- Marketing Description: Highly versatile Heavy-Duty Timers are ideal for any application that requires a simple or complex
- Product Color: White
- Product Height: 4.125 in
- Product Length: NA NA
- Product Weight: NA lbs
- Product Width: 1.75 in
- Warranty Period: 1-Year limited
Installation & Operation
- Mount the unit in a suitable location with appropriate clearance and access for connections and service.
- Connect utility and load conductors following applicable guidelines and the manufacturer’s instructions.
- Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
- Configure any available load management or control features as supported by the provided specifications.
- Test automatic transfer or operational functionality and verify proper performance before placing into service.
- Complete final inspection and follow ongoing maintenance practices appropriate to the product category.
Professional Applications
- Indoor Lighting Control Systems
- Outdoor Security and Landscape Lighting
- Air Movement and Ventilation Control
- Commercial Building Automation
- Residential Smart Home Integration
- Energy Management Systems
- Security and Safety Lighting
Why Choose Intermatic Quality?
Intermatic delivers reliable timer control solutions with professional-grade construction and comprehensive 1-year limited warranty coverage. The ST01’s white finish and compact 4.125″ x 1.75″ x 1.813″ dimensions provide clean integration into any electrical installation, while the replaceable CR2 lithium battery ensures up to three years of dependable operation with automatic Daylight Saving Time adjustment.


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