Introduction
The Orbit Underground 57874 4-Zone Indoor Timer is designed to automate your watering system with ease. Featuring Easy-Set Logic programming, this timer allows for quick setup and efficient irrigation management. Its clear LCD display and intuitive dial simplify programming, making it an ideal solution for managing your garden's watering needs.

Image: The Orbit 57874 4-Zone Indoor Timer, showing its green casing, LCD display, control buttons (Manual, Clear, Rain Delay, Program A-B, directional arrows, Enter), and the central Easy Dial with settings like Date/Clock, Start Time, Run Time, How Often, Budget, Auto, and Off.
Safety Information
- This device is designed for indoor use only. Do not expose it to direct outdoor elements or excessive moisture.
- Ensure the power outlet used is easily accessible and properly grounded.
- Disconnect power before performing any maintenance or installation.
- Do not attempt to open or repair the unit yourself. Refer all servicing to qualified personnel.
- Keep out of reach of children.
Package Contents
Verify that all items are present in the package:
- Orbit 57874 4-Zone Indoor Timer
- User Manual (this document)
Setup
Installation
- Select a suitable indoor location near a standard electrical outlet and away from direct sunlight or extreme temperatures.
- Mount the timer securely to a wall using appropriate screws and anchors (not included). Ensure it is level.
- Connect the power adapter to the timer and then plug it into the electrical outlet.
- Connect your irrigation zone wires to the corresponding terminals on the timer. Ensure proper wiring for each zone.
Initial Power-Up and Battery Installation
The timer requires 1 CR2 battery (not included) for backup power to retain programming during power outages.
- Locate the battery compartment, typically on the side or back of the unit.
- Insert 1 CR2 battery, observing the correct polarity (+/-).
- Close the battery compartment securely.
Operating Instructions
The Orbit 57874 features an Easy Dial for intuitive programming and a set of control buttons.
Understanding the Easy Dial
Rotate the dial to select the desired programming mode:
- DATE/CLOCK: Set the current time and date.
- START TIME: Define when watering cycles begin.
- RUN TIME: Set the duration for each watering zone.
- HOW OFTEN: Specify the frequency of watering (e.g., specific days, every X days).
- BUDGET: Adjust watering duration by a percentage for seasonal changes.
- AUTO: Normal operation mode where programmed schedules run automatically.
- OFF: Turns off all automatic watering.
Setting the Clock and Date
- Turn the Easy Dial to DATE/CLOCK.
- Use the + and - buttons to adjust the year, month, day, hour, and minute.
- Press ENTER to confirm each setting and move to the next.
- Once finished, turn the dial back to AUTO.
Programming Watering Schedules
The timer supports a single program for all zones.
- Set Start Time: Turn the dial to START TIME. Use + and - to set the desired start time. Press ENTER.
- Set Run Time: Turn the dial to RUN TIME. Use the directional arrows to select a zone (1-4). Use + and - to set the watering duration for that zone (e.g., minutes). Press ENTER to save and move to the next zone, or select another zone.
- Set How Often: Turn the dial to HOW OFTEN. Use the directional arrows and +/- buttons to select watering days (e.g., specific days of the week, or every X days). Press ENTER to confirm.
- Return the dial to AUTO for the program to run.
Manual Operation
To manually water a zone:
- Press the MANUAL button.
- Use the directional arrows to select the zone you wish to water.
- Use + and - to set the manual watering duration.
- Press ENTER to start manual watering. The timer will return to AUTO mode after the manual cycle completes.
Rain Delay Function
To temporarily suspend watering due to rain:
- Press the RAIN DELAY button.
- Use + and - to select the number of days for the delay (e.g., 24, 48, 72 hours).
- Press ENTER to activate the rain delay. The timer will resume its schedule automatically after the delay period.
Clearing Programs
To clear all programmed settings:
- Press and hold the CLEAR button for a few seconds until the display indicates that settings have been cleared.
Program A-B (If Applicable)
The Orbit 57874 is specified as a single program timer. The 'Program A-B' button may not be active or may serve a different function on this specific model. Refer to the on-screen prompts if this button is present and active.
Maintenance
- Cleaning: Wipe the timer's exterior with a soft, damp cloth. Do not use abrasive cleaners or immerse the unit in water.
- Battery Replacement: Replace the CR2 backup battery annually or when the low battery indicator appears on the LCD. Ensure the timer is powered off or unplugged before replacing the battery.
- Winterization: If the timer is installed in an area subject to freezing temperatures, disconnect it from power and store it indoors during winter months to prevent damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Timer display is blank. | No power; dead backup battery. | Check power connection. Replace CR2 backup battery. |
| Zones not watering. | Timer in OFF mode; incorrect programming; rain delay active; wiring issue. | Turn dial to AUTO. Verify start times, run times, and frequency. Check if rain delay is active. Inspect wiring connections to zones. |
| Timer not holding settings. | Dead backup battery. | Replace the CR2 backup battery. |
| Manual watering not working. | Incorrect zone selection; insufficient duration set. | Ensure correct zone is selected and a duration is set before pressing ENTER. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | 57874 |
| Brand | Orbit |
| Number of Zones | 4 |
| Installation Type | Indoor |
| Material | Plastic |
| Color | Green |
| Item Weight | 1.3 Pounds |
| Product Dimensions | 0.79 x 0.74 x 1.33 inches |
| Backup Battery | 1 CR2 battery (required) |
| UPC | 046878578746 |
Warranty and Support
Orbit products are designed for reliability and durability. For specific warranty details and terms, please refer to the documentation included with your purchase or visit the official Orbit website. For technical support, troubleshooting assistance, or to inquire about replacement parts, please contact Orbit customer service.
You can find more information and contact details by visiting the Orbit Store on Amazon.





