Leviton DT130-1LW Countdown Timer Switch User Manual

1. Product Overview

The Leviton DT130-1LW Countdown Timer Switch is designed to replace standard wall switches, providing automated control for various electrical loads such as bathroom exhaust fans, household lights, heat lamps, and towel warmers. This single-pole switch features four preset time options (5, 10, 15, and 30 minutes) and a manual off button, ensuring devices turn off automatically to conserve energy.

Key features include a slim design for easy installation in wall boxes, interchangeable line and load wires to simplify wiring, and an innovative Green Flex Sleeve for flexible grounding or neutral wire connections.

Figure 1: Front view of the Leviton DT130-1LW Countdown Timer Switch.

2. Safety Information

• WARNING: To avoid fire, shock, or death, turn off power at the circuit breaker or fuse box and test that the power is off before wiring.
• Installation must be performed by a qualified electrician or in accordance with local electrical codes.
• Use only copper wire.
• Do not use with dimmable loads if it is the only light source in the area.
• A ground wire is required for installation.

3. Installation Instructions

3.1 Tools Required

• Screwdriver (Phillips and Flathead)
• Wire Strippers
• Electrical Tape
• Non-contact Voltage Tester

3.2 Wiring Steps

1. Turn Off Power: Locate the circuit breaker or fuse that controls the switch you are replacing and turn it OFF. Verify power is off using a non-contact voltage tester.
2. Remove Old Switch: Carefully remove the existing wall plate and unscrew the old switch from the wall box. Disconnect the wires from the old switch, noting which wires were connected to the line (power in) and load (power out) terminals, as well as the ground wire.
3. Prepare Wires: Strip approximately 1/2 inch of insulation from each wire end if necessary.
4. Connect Ground Wire: The DT130-1LW requires a ground connection. Connect the green ground wire from the timer switch to the bare copper or green insulated ground wire in the wall box. If no neutral wire is available, the Green Flex Sleeve on the timer's white wire should remain on, and this white wire should be connected to the ground bundle. If a neutral wire is present, remove the Green Flex Sleeve and connect the white wire to the neutral bundle.

Figure 2: Wiring diagram showing the Green Flex Sleeve for ground or neutral connection.
5. Connect Line and Load Wires: The DT130-1LW has two black wires that are interchangeable for line and load connections. Connect one black wire from the timer switch to the line (power in) wire from the wall box and the other black wire from the timer switch to the load (power out) wire. Secure connections with wire nuts or appropriate connectors.


Figure 3: Example of connecting the timer switch wires to the household wiring.

6. Mount Switch: Carefully push all wires back into the wall box. Secure the timer switch to the wall box using the provided screws.
7. Install Wall Plate: Attach a compatible Decora wall plate (sold separately) over the timer switch.
8. Restore Power: Turn the power back ON at the circuit breaker or fuse box.

3.3 Installation Video Guide

3.4 Green Flex Sleeve Explanation

4. Operating Instructions

The Leviton DT130-1LW features intuitive push-button operation for setting countdown times.

• Preset Buttons: The switch has four buttons labeled 5M, 10M, 15M, and 30M, corresponding to 5, 10, 15, and 30 minutes respectively. Press any of these buttons to activate the connected device for the selected duration. The device will automatically turn off when the time expires.
• Manual Off Button: The bottom button acts as a manual OFF switch. Press it at any time to turn off the connected device before the countdown completes.
• LED Indicators: Small LEDs next to each button illuminate to indicate the active countdown setting.

Figure 4: Labeled features of the timer switch, including preset buttons and LED indicators.

5. Maintenance

The Leviton DT130-1LW Countdown Timer Switch requires minimal maintenance.

• Cleaning: To clean the switch, wipe with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure power is off before cleaning.
• Faceplate Replacement: The faceplate can be removed for color changes using DTKIT faceplates (sold separately). Refer to the installation section for guidance on handling the switch.


Figure 5: Illustration of how to change the faceplate for aesthetic customization.

6. Troubleshooting

• Device does not turn on:
  • Ensure power is ON at the circuit breaker.
  • Verify all wire connections are secure and correct.
  • Check if the connected load (bulb, fan) is functional.
• Timer does not turn off automatically:
  • Confirm the correct preset button was pressed.
  • Ensure the switch is not damaged.
• Flickering lights:
  • This timer is not designed for use with dimmable loads if it is the only light source. Ensure compatible load types are connected.

If issues persist, consult a qualified electrician.

7. Specifications

Figure 6: Detailed dimensions of the Leviton DT130-1LW Countdown Timer Switch.

8. Warranty and Support

For warranty information and technical support, please visit the official Leviton website or contact their customer service. Keep your purchase receipt for warranty claims.

Online Resources: www.leviton.com