1. Introduction
The Intermatic ML100THB is a low voltage 100-watt power pack designed for use with Malibu low-voltage lighting systems. This unit converts standard 120V AC household current to a safe 12V AC output, suitable for outdoor landscape lighting. It features multiple ON/OFF timer settings, an adjustable light level sensor, and programmable settings for automated operation. The robust, impact-resistant plastic housing ensures durability in outdoor environments.
Key features include:
- Adjustable light level sensor for dusk-to-dawn operation.
- Programmable ON/OFF settings for customized timing.
- Easy, tool-free wiring for simplified installation.
- Safe and convenient low voltage power source.
- Impact-resistant plastic housing for outdoor durability.
2. Safety Information
WARNING: To reduce the risk of electric shock, fire, or injury, read and follow all instructions carefully.
- Always disconnect power at the circuit breaker before installing or servicing the unit.
- This product is intended for outdoor use and must be connected to a Ground Fault Circuit Interrupter (GFCI) protected outlet.
- Do not immerse the power pack in water.
- Ensure all connections are secure and protected from moisture.
- Do not exceed the maximum wattage rating of 100 watts.
- Keep children away from electrical devices.
- If the power cord or housing is damaged, discontinue use immediately and replace the unit.
3. Package Contents
Upon opening the package, verify that the following items are included:
- Intermatic ML100THB Low Voltage 100-Watt Power Pack
- Two (2) sets of trippers for timer programming
- Instruction Manual (this document)
4. Installation and Setup
Follow these steps for proper installation of your ML100THB power pack:
- Choose a Location: Select a suitable outdoor location near a 120V AC GFCI-protected outlet. The power pack should be mounted vertically at least 1 foot (30 cm) above ground level to prevent water accumulation.
- Mount the Power Pack: Securely mount the power pack to a wall or post using appropriate screws (not included) through the mounting holes on the unit.
- Connect Low Voltage Wiring: The ML100THB features tool-free wiring terminals. Strip approximately 1/2 inch (1.25 cm) of insulation from the ends of your low-voltage landscape lighting cables. Insert the bare wire ends into the terminals on the power pack, ensuring a secure connection. Connect the common wire to the common terminal and the hot wire to the hot terminal. Ensure total wattage of connected lights does not exceed 100 watts.
- Plug into Outlet: Once all low-voltage connections are made and secured, plug the power pack's 120V AC cord into the GFCI-protected outdoor outlet.
Image: The Intermatic ML100THB power pack, showing its main body, control panel with 'MENU' and 'LIGHT LEVEL' buttons, a digital display, and the attached 120V AC plug.
5. Operating Instructions
The ML100THB offers various operating modes and programming options:
5.1. Setting the Clock
Refer to the specific instructions provided with your unit for setting the internal clock. Typically, this involves pressing a 'MENU' or 'SET' button and using arrow keys to adjust time, then confirming.
5.2. Programming ON/OFF Times
The power pack includes two sets of trippers for setting specific ON and OFF times. These trippers are small pins that are inserted into the timer dial (if applicable) or used with digital programming buttons.
- ON Trippers: Insert the 'ON' tripper(s) at the desired time(s) you want your lights to turn on.
- OFF Trippers: Insert the 'OFF' tripper(s) at the desired time(s) you want your lights to turn off.
- Ensure trippers are firmly seated. For digital models, follow the on-screen prompts after pressing the 'MENU' button to set program times.
5.3. Adjustable Light Level Sensor (Dusk-to-Dawn)
The integrated light level sensor allows the power pack to automatically turn lights on at dusk and off at dawn. The sensitivity of this sensor can be adjusted.
- Locate the 'LIGHT LEVEL' button or adjustment dial on the unit.
- Press the 'LIGHT LEVEL' button or rotate the dial to increase or decrease the sensitivity. A higher sensitivity setting will turn lights on earlier at dusk and off later at dawn.
- Test the setting by covering the sensor to simulate darkness and observing if the lights turn on.
5.4. Manual Override
Most units include a manual override function, often a button labeled 'MANUAL' or by pressing the 'MENU' button briefly. This allows you to turn the lights ON or OFF independently of the programmed settings or light sensor. The unit will typically revert to its programmed schedule at the next scheduled event.
6. Maintenance
The Intermatic ML100THB is designed for minimal maintenance. Follow these guidelines to ensure optimal performance and longevity:
- Cleaning: Periodically wipe the exterior of the power pack with a damp cloth to remove dirt and debris. Do not use abrasive cleaners or solvents.
- Sensor Check: Ensure the light level sensor is clean and unobstructed for proper dusk-to-dawn operation.
- Wiring Inspection: Annually inspect low-voltage wiring connections for corrosion or damage. Ensure connections remain secure.
- Storage: If storing the unit for an extended period, disconnect it from power and store in a dry, protected area.
7. Troubleshooting
If you encounter issues with your ML100THB power pack, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on. | No power to the unit. Faulty low-voltage wiring. Incorrect timer setting. Light sensor not detecting darkness. | Check GFCI outlet for power (reset if tripped). Verify all low-voltage connections are secure. Review timer program; ensure ON trippers are correctly placed. Ensure light sensor is clean and unobstructed. Test by covering sensor. |
| Lights stay on constantly. | Incorrect timer setting. Light sensor constantly detecting darkness. Manual override engaged. | Review timer program; ensure OFF trippers are correctly placed. Check for obstructions over the light sensor or if unit is in a perpetually dark location. Disengage manual override. |
| Lights flicker or are dim. | Overloaded circuit (too many lights). Loose wiring connection. Damaged low-voltage cable. | Reduce the number of connected lights; ensure total wattage is below 100W. Check and tighten all low-voltage wiring connections. Inspect low-voltage cable for cuts or damage; replace if necessary. |
| Timer not keeping accurate time. | Power interruptions. Internal clock issue. | Reset the clock after any power outage. If problem persists, contact support. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | ML100THB |
| Input Voltage | 120 Volts AC |
| Output Voltage | 12 Volts AC |
| Nominal Wattage | 100 Watts |
| Color | Black |
| Item Weight | 3.15 Pounds (1.43 kg) |
| Dimensions (Parcel) | 20.57 x 14.48 x 11.68 cm |
| Manufacturer | Intermatic, Inc. |
| Certifications | UL Listed |
9. Warranty and Support
Intermatic products are manufactured to high-quality standards. For specific warranty information, please refer to the warranty card included with your product or visit the official Intermatic website. If you require technical assistance or have questions not covered in this manual, please contact Intermatic customer support directly.
Intermatic, Inc.
Customer Support: [Refer to product packaging or official website for contact details]
Website: www.intermatic.com