1. Introduction
Thank you for choosing the Intermatic ST01K Astronomic Digital In-Wall Timer. This advanced timer is designed to provide convenient and energy-efficient control of your lighting. Featuring astronomic capabilities, it automatically adjusts to daily sunrise/sunset changes and daylight saving time, ensuring your lights operate precisely when needed. Its unique design allows for installation without a neutral wire, making it ideal for retrofits and remodels. The ST01K supports both single-pole and 3-way applications and is compatible with LED, CFL, and incandescent lighting.
2. Important Safety Information
WARNING: Risk of Electric Shock. Installation requires working with high voltage wiring. Always turn off power at the circuit breaker or fuse box before installation or servicing. Improper installation can result in serious injury or death.
- Read all instructions carefully before installation and operation.
- This device must be installed by a qualified electrician in accordance with all national and local electrical codes.
- Do not use this timer with appliances that could cause unsafe conditions if operated unattended (e.g., sunlamps, saunas, heaters, etc.).
- Ensure all wire connections are secure and properly insulated.
- Operating temperature range: 32°F to 122°F (0°C to 50°C).
3. Package Contents
Please verify that all components are present before beginning installation:
- Intermatic ST01K Astronomic Digital In-Wall Timer
- Installation and Operating Instructions Manual
- CR2 Battery (pre-installed)
Note: A decorator style wall plate is sold separately and is required for a finished installation.
4. Setup and Installation
The ST01K timer is designed for easy installation in standard wall boxes and does not require a neutral wire, making it suitable for older homes or locations where a neutral wire is not readily available. It can be used in both single-pole and 3-way wiring configurations.
4.1 Wiring Diagram (Single-Pole Application)
- Turn Off Power: Locate the circuit breaker or fuse that controls the light switch you are replacing and turn it OFF. Verify power is off using a voltage tester.
- Remove Old Switch: Carefully remove the existing wall plate and switch from the wall box. Disconnect the wires from the old switch.
- Identify Wires: In a single-pole setup, you will typically have two hot wires (line and load) and a ground wire. The ST01K does not require a neutral wire.
- Connect Wires:
- Connect the timer's black wire to the incoming line (hot) wire from the electrical panel.
- Connect the timer's red wire to the load wire going to the light fixture.
- Connect the timer's green wire to the ground wire in the wall box.
- Cap off any unused wires (e.g., the blue wire for 3-way applications) with a wire nut.
- Mount Timer: Carefully push the wired timer into the wall box. Secure it with the provided screws.
- Install Wall Plate: Attach your decorator style wall plate (sold separately).
- Restore Power: Turn the power back ON at the circuit breaker.
4.2 Wiring Diagram (3-Way Application)
For 3-way applications, the ST01K can replace one of the existing 3-way switches. The blue wire on the timer is used as the traveler wire. Refer to the detailed wiring diagrams provided in the physical manual for specific 3-way configurations, as they can vary.
An image showing the white Intermatic ST01K Astronomic Digital In-Wall Timer. The timer features a digital LCD display showing '12:00' and a large rocker switch below it. The unit is designed for in-wall installation, with metal mounting brackets visible on the top and bottom. The side of the unit shows the 'INTERMATIC INC' branding.
5. Operating Instructions
The ST01K timer features a large LCD display for easy readout and intuitive programming. It supports up to 20 ON/OFF events and includes astronomic, random, and automatic daylight saving time adjustment features.
5.1 Initial Setup and Time Setting
- Power On: After installation, turn on the power at the circuit breaker. The display will illuminate.
- Set Current Time: Press the 'CLOCK' button. Use the 'HOUR' and 'MIN' buttons to set the current time. Press 'DAY' to set the current day of the week. Press 'CLOCK' again to save.
- Set Location (Astronomic Feature): The astronomic feature requires setting your geographical location for accurate sunrise/sunset calculations. Refer to the full manual for detailed steps on setting your latitude and longitude or selecting a pre-programmed city.
- Daylight Saving Time (DST): The timer automatically adjusts for Daylight Saving Time. Ensure this feature is enabled in the settings (refer to the full manual for menu navigation).
5.2 Programming ON/OFF Events
The ST01K allows for up to 20 ON/OFF events. Events can be programmed for specific times or relative to sunrise/sunset (astronomic events).
- Enter Program Mode: Press the 'PROG' button. The display will show '1 ON'.
- Set ON Time: Use 'HOUR', 'MIN', and 'DAY' buttons to set the desired ON time and days of the week for Program 1. You can select specific days, weekdays, weekends, or everyday.
- Set OFF Time: Press 'PROG' again. The display will show '1 OFF'. Set the desired OFF time and days for Program 1.
- Add More Programs: Continue pressing 'PROG' to cycle through and set up to 20 ON/OFF programs.
- Exit Program Mode: Press the 'CLOCK' button to exit program mode and return to normal operation.
5.3 Manual Override and Random Feature
- Manual Override: The large rocker switch on the timer allows for instant manual ON/OFF control, overriding the programmed schedule temporarily. The timer will resume its schedule at the next programmed event.
- Random Feature: This feature can vary the programmed ON/OFF times by a few minutes (typically 0-30 minutes) to give your home a 'lived-in' appearance when you are away. Activate this feature through the timer's menu settings (refer to the full manual).
6. Maintenance
The Intermatic ST01K timer is designed for long-lasting, maintenance-free operation. However, occasional care can ensure optimal performance.
- Cleaning: To clean the timer, gently wipe the surface with a soft, damp cloth. Do not use abrasive cleaners, solvents, or spray cleaners directly onto the unit.
- Battery Backup: The timer includes a CR2 battery for backup, preserving settings during power outages. The average battery life is approximately 8000 hours. If the display becomes dim or erratic during a power outage, the battery may need replacement. Refer to the full manual for battery replacement instructions.
7. Troubleshooting
If you experience issues with your ST01K timer, please consult the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer display is blank. | No power to the timer; battery depleted. | Check circuit breaker. Ensure wiring connections are secure. Replace backup battery if necessary. |
| Lights do not turn ON/OFF at programmed times. | Incorrect programming; manual override engaged; wiring issue. | Verify programmed ON/OFF times and days. Check if manual override is active. Re-check wiring connections. |
| Astronomic feature is inaccurate. | Incorrect location setting. | Verify and correct the geographical location (latitude/longitude or city) setting in the timer's menu. |
| Timer is not responding to button presses. | Temporary software glitch; low battery. | Try resetting the timer (refer to manual for reset procedure). Replace backup battery. |
If the problem persists after trying these solutions, please contact Intermatic Customer Support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | ST01K |
| Color | White |
| Material | Plastic |
| Product Dimensions (D x W x H) | 5"D x 6.5"W x 2.75"H |
| Item Weight | 4.8 ounces |
| Number of Settings | Up to 20 ON/OFF events |
| Switch Type | 1-way, 3-way |
| Mounting Type | Wall Mount |
| Compatibility | LED, CFL, Incandescent lighting |
| Voltage | 120/277 VAC |
| Resistive Load | 15A, 120/277VAC |
| Tungsten Load | 15A, 120 VAC; 6A, 208/277 VAC |
| Ballast Load | 8A, 120 VAC; 4A, 208/277 VAC |
| Motor Load | 1 HP, 120 VAC; 2 HP, 240 VAC |
| DC Loads | 4A, 12 VDC; 2A, 28 VDC |
| Battery Type | 1 CR2 battery (included) |
| Average Battery Life | 8000 Hours |
| Certifications | CSA certified |
9. Warranty and Support
Intermatic products are designed for reliability and performance. This product comes with a manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty documentation included with your product or visit the official Intermatic website.
Customer Support
If you have any questions regarding the installation, operation, or troubleshooting of your Intermatic ST01K timer, please contact Intermatic Customer Support:
- Website: www.intermatic.com
- Phone: Refer to the website for current contact numbers.
Please have your model number (ST01K) and purchase information ready when contacting support.
