Overview of the Ace Electronic Water Timer
The Ace timer offers programmable zones, a rain‑delay feature that pauses watering for up to 7 days, and a manual mode for on‑demand use. Battery‑backed memory retains settings, while multiple models support 1‑, 2‑, and 4‑zone configurations, making it versatile for gardens and lawns. irrigation!!
Product Features
Built for residential and light commercial irrigation, the Ace Electronic Water Timer delivers up to four programmable zones, each with start times, durations, and repeat patterns. A built‑in rain‑delay automatically pauses watering when precipitation is detected, protecting up to seven days of water.
Instant control is available via a manual mode button that instantly turns a selected zone on or off, bypassing the programmed schedule. Battery backup retains all settings during power outages, and a low‑voltage alarm alerts users when the supply falls below the required threshold.
The device’s rugged, weather‑sealed enclosure protects electronics from rain, dust, and temperature extremes. A clear LCD display shows current status, time, and zone activity. The unit’s compact footprint fits into most outdoor control boxes, and its low power consumption keeps operating costs minimal.
For added flexibility, the timer can pair with a remote control module, allowing users to adjust schedules from a distance. The device also supports day‑of‑week scheduling, so users can set different watering times for weekdays versus weekends. Its compact, low‑profile design fits easily into standard outdoor control panels, and the 12‑V DC input is compatible with most residential irrigation power supplies.
Firmware can be updated via a serial port, enabling future enhancements. An integrated LED indicator shows when a zone is active, lets users monitor operation without opening the enclosure!!
Model Variants
The Ace line offers programmable timers for diverse irrigation needs. The 1‑zone model, Ace‑01, weighs 0.5 lb and measures 3.5 in × 2.5 in × 1.2 in. The 2‑zone unit, Ace‑02, weighs 0.8 lb and measures 4.0 in × 3.0 in × 1.5 in. The 4‑zone version, Ace‑04, weighs 1.2 lb and measures 5.0 in × 4.0 in × 2.0 in. All units feature a 3‑digit LED display that shows time, zone status, and rain‑delay. A built‑in capacitive sensor triggers a 7‑day pause when rain is detected. Manual “MAN” overrides activate a zone for a 30‑minute burst. A 3‑cell Li‑ion backup keeps settings for 12 months. Low‑voltage alarms alert at 9 V. The IP65 enclosure protects against water jets and dust. Optional 433 MHz remote modules let users adjust schedules from up to 30 ft. Firmware updates via a serial UART port enable Wi‑Fi or smartphone add‑ons. Units meet UL 1449 and IEC 60335‑2‑41 standards. The modular board design allows swapping a failed zone controller, cutting maintenance costs. Compatible with 1/2‑inch and 3/4‑inch solenoid valves, the timers can be wired in series or parallel. The Ace line delivers scalable, reliable, user‑friendly control for homeowners managing lawns, gardens, or larger landscapes.
Installation is straightforward: connect the timer to a 12‑V DC source, wire the solenoid valves to the zone outputs, and set the schedule using the on‑screen keypad. The device’s size allows it to fit into outdoor control boxes, and its power draw keeps energy consumption.

Safety and Compliance
ACE timers meet UL 1449 and IEC 60335‑2‑41, ensuring electrical safety. The IP65 enclosure protects against water jets and dust. A 9 V low‑voltage alarm warns of power loss. All models use 12‑V DC and have a 3‑cell Li‑ion backup for 12 months. All units are marked and comply with local regulations!
Electrical Safety Guidelines
The Ace electronic water timer operates on a 12‑V DC supply, well below the 120‑V mains threshold, dramatically reducing shock risk. All internal wiring is insulated with UL‑approved cable, and the device is enclosed in an IP65 rated housing that blocks dust ingress and protects against water jets up to 1 m in height. Firmware checks voltage solenoid on! safety OK! The firmware disables watering during rain, preventing over‑watering and extending life. A 0.5 A fuse protects againsting
Grounding is essential; the unit’s dedicated earth terminal connects to the building’s grounding system, ensuring any fault current is safely diverted. The 0.5 A fuse is a secondary protection that trips under surge conditions, preventing damage to the microcontroller and solenoid. The metal chassis not only houses components but also serves as a heat sink, maintaining optimal operating temperature. The rain‑delay pauses the schedule for up to 7 days when rain is detected, saving water!!
Manual mode is activated by pressing the dedicated button; it overrides the programmed schedule, allowing instant water flow for tasks like washing a car or cleaning a driveway. The unit displays a countdown timer during manual operation, and once the button is released, the system resumes the programmed schedule. Regular firmware updates via USB ensure the rain‑delay logic stays current and bug‑free. The rain‑sensor probe detects ground moisture and suspends watering when wet, water! Enjoy efficient watering and save!!
Environmental and Regulatory Standards
The Ace electronic water timer is designed to meet rigorous environmental and regulatory standards that promote water conservation and energy efficiency. Its low‑power microcontroller and efficient solenoid driver draw less than 0.5 W when idle, aligning with ENERGY STAR criteria for small electronics and qualifying for green‑technology rebates in many regions. The programmable schedule, coupled with a rain‑delay function that suspends watering for up to seven days when precipitation is detected, complies with the EPA WaterSense standard, guaranteeing at least a 20 % reduction in water use compared to conventional irrigation systems. Soil‑moisture sensors further optimize performance by pausing irrigation when the ground is already adequately wet, reducing runoff and nutrient leaching. The timer’s enclosure meets the IP65 rating, shielding internal components from dust and water jets, and is constructed from recyclable ABS plastic, supporting the EPA “Green Electronics” program. and meets EPA Packaging is minimal, made from 100 % post‑consumer recycled cardboard, and the manufacturer provides a detailed product data sheet with a full life‑cycle assessment, enabling municipalities and irrigation professionals to verify compliance with local water‑conservation ordinances and environmental regulations. By meeting these standards, the Ace timer conserves water, reduces energy consumption, and supports broader sustainability goals in residential and commercial landscapes.

Installation Process

Mount the Ace timer on a wall near the water line. Connect the 120 V supply to the red (+) and black (−) terminals, then wire the solenoid leads to the green and yellow outputs. Use a 10 A circuit breaker and ensure all connections are tight and insulated. Check voltage with a meter before power.!
Hardware Requirements
To install the Ace Electronic Water Timer, gather the following components and tools:
- Wall‑mounted mounting bracket (included with the unit).
- 120 V AC power supply (single‑phase, 60 Hz).
- 10 A circuit breaker or fuse for the dedicated circuit.
- Solenoid valve(s) compatible with the timer’s 24 V DC output.
- Wiring: 12 AWG for power, 14 AWG for solenoid leads.
- Weather‑proof junction box and conduit for outdoor connections.
- Voltage tester and insulated screwdriver.
- Heat‑shrink tubing and wire connectors.
- Battery pack (if using battery backup) with at least 12 V, 5 Ah capacity.
- Optional: Rain‑sensor module for automatic delay.
Ensure the power source is de‑energized before handling. Mount the bracket on a stable surface, connect the power leads to the timer’s red (+) and black (−) terminals, and attach the solenoid leads to the green and yellow outputs. Secure all connections with heat‑shrink tubing and use a weather‑proof junction box for outdoor wiring. Verify the voltage with a tester before applying power. Follow local electrical codes and consult a licensed electrician if unsure.

Optional accessories include a 2‑way switch for manual override, a water‑sensor module for moisture control, and a 12 V DC adapter for battery backup. Ensure all connections are weather‑proof and and use conduit for outdoor runs. Label each wire for easy daily now maintenance upgrades.
Step-by-Step Wiring Instructions
Begin by turning off the main circuit and verifying no voltage with a tester. Mount the timer on the bracket and secure it. Connect the 120 V AC supply: attach the black (neutral) wire to the timer’s neutral terminal and the red (hot) wire to the live terminal. Use a 12 AWG cable for the power feed. For the solenoid, connect the green wire to the timer’s green output and the yellow wire to the yellow output. Ensure all connections are tight and insulated with heat‑shrink tubing. If the unit includes a rain‑sensor module, wire the sensor’s power leads to the designated 24 V DC terminals, and connect the sensor’s signal line to the input terminal marked “Rain.” For battery backup, insert the 12 V battery pack into the compartment, connect the positive lead to the + terminal and the negative to the – terminal, and secure the battery with the provided clamp. After all connections are made, close the junction box, seal it with silicone, and mount the timer in a weather‑proof enclosure. Finally, restore power, test the timer by selecting a short cycle, and confirm the solenoid activates. If the solenoid does not engage, double‑check the polarity and continuity of the wiring.
When wiring the timer, always use a dedicated circuit breaker sized for the total load of the solenoids and the timer itself. If the system will be exposed to moisture, select conduit rated for outdoor use and ensure all connections are sealed with silicone sealant. The timer’s green and yellow outputs should be wired to the solenoid’s normally open contacts; the neutral and live wires must be connected to the power supply’s corresponding terminals. For models that support a rain‑sensor, the sensor’s power leads are typically 24 V DC, so connect them to the 24 V terminals on the timer. If you opt for battery backup, install the battery pack in the rear compartment, connect the positive lead to the + terminal, and the negative to the – terminal; the battery should be rated for at least 12 V and 5 Ah to maintain programming during power outages. After completing all connections, double‑check the polarity of each wire, test the system with a short cycle, and verify that the solenoid activates and deactivates as expected. If the solenoid fails to engage, inspect the wiring for loose connections, check the continuity of the solenoid coil, and confirm that the timer’s output voltage matches the solenoid’s rated voltage. During installation, it is prudent to label each wire with a color‑coded tag to simplify future maintenance. The timer’s green and yellow outputs should be connected to the solenoid’s normally open contacts; the neutral and live wires must be tied to the power supply’s corresponding terminals. If the system is located in a damp environment, use conduit rated for outdoor use and apply silicone sealant to all junctions to prevent moisture ingress. For models equipped with a rain‑sensor, the sensor’s power leads are typically 24 V DC; connect them to the 24 V terminals on the timer and wire the sensor’s signal line to the input terminal marked “Rain.” Battery backup packs should be installed in the rear compartment, with the positive lead attached to the + terminal and the negative lead to the – terminal; a 12 V, 5 Ah battery will preserve programming during power outages. After completing all connections, double‑check the polarity of each wire, test the system with a short cycle, and verify that the solenoid activates and deactivates as expected; If the solenoid fails to engage, inspect the wiring for loose connections, check the continuity of the solenoid coil, and confirm that the timer’s output voltage matches the solenoid’s rated voltage.

Programming the Water Timer
Set the clock, then choose a zone and tap the schedule button. Input start/end times, duration, and repeat days. Use the rain‑delay toggle to pause watering for up to 7 days. Press save, and the timer will run automatically.Set local time to match daylight savings!

Setting the Schedule
To program the Ace Electronic Water Timer, first ensure the unit’s internal clock reflects the correct local time. Use the “Set Time” function, navigating with the arrow keys to adjust hours and minutes, then confirm with the OK button. Next, select the irrigation zone you wish to program by pressing the zone selector button; the display will show “Zone 1”, “Zone 2”, etc. Once the zone is highlighted, tap the “Schedule” button. The screen will prompt you to enter the start time for the watering cycle. Use the arrow keys to set the hour, then the minute, and press OK to lock the value. Repeat the process for the end time, ensuring that the end time is later in the day than the start time. The timer will automatically calculate the duration of the cycle, but you can override this by entering a custom duration in minutes if desired. After the times are set, the display will ask you to choose the days of the week on which the program should run. Use the arrow keys to toggle Monday through Sunday, pressing OK when you have selected all desired days. You may add multiple programs for the same zone by pressing the “Add Program” button and repeating the steps above; the unit allows up to four separate schedules per zone. Once all parameters are confirmed, press the “Save” button to store the program in the unit’s non‑volatile memory. The timer will now run the schedule automatically, turning the water on and off according to the programmed times and days. If you need to adjust the schedule later, simply repeat the process, selecting the same zone and modifying the start/end times or days as needed. The unit’s battery backup ensures that your settings remain intact even if the power is interrupted, and you can view or delete existing programs from the main menu to keep your watering plan organized and up‑to‑date.
Using the Rain Delay Feature

The Ace Electronic Water Timer’s rain‑delay function allows you to pause scheduled watering when precipitation is expected, conserving water and preventing over‑watering. To activate the delay, press the Rain button on the front panel. The display will show “Rain Delay: ON” and a countdown timer indicating the remaining delay period. By default, the unit offers a maximum delay of 7 days, but you can adjust the length by pressing the + or ― keys to set the desired number of days. Once the delay is set, the timer will automatically suspend all active programs for the selected duration. If rain stops early, you can manually reset the delay by pressing the Rain button again; the display will revert to “Rain Delay: OFF” and the scheduled programs will resume at the next programmed time. The rain‑delay feature is particularly useful for regions with frequent showers, as it eliminates the need to manually adjust schedules each time weather changes. Additionally, the delay can be combined with manual mode: after the delay ends, you may still override the schedule by pressing the Manual button to turn the water on for a brief period, such as for a quick lawn clean‑up. Remember to check the rain‑delay status before making any manual changes, as the timer will not allow manual activation if the delay is still active. By using this feature, you can maintain optimal moisture levels while reducing water waste and ensuring your irrigation system operates efficiently. The unit also supports integration with external rain sensors; when a sensor is connected, the timer will automatically trigger the delay upon detecting moisture, eliminating manual input. Finally, the built‑in battery backup preserves the rain‑delay setting even during power outages, so your schedule remains intact until power is restored. Users can also view the remaining delay time directly from the main display by pressing the Info button; the screen will flash the days left, allowing quick verification without navigating menus. For advanced users, the firmware allows setting a custom maximum delay via the Options menu, enabling delays longer than seven days if needed. The rain‑delay function is fully compliant with local water‑conservation regulations, helping homeowners meet municipal water‑use restrictions. When the delay period expires, the timer automatically re‑engages the programmed cycle, ensuring that the lawn receives the correct amount of water without manual intervention. This seamless integration of rain detection and scheduling makes the Ace timer an ideal choice for both residential and commercial irrigation setups; All settings are saved automatically.

Manual Mode and Troubleshooting
Manual mode lets you override schedules, turning water on instantly. Press Manual to activate; the display shows “Manual ON.” To stop, press again. If the timer won’t respond, check power, reset by unplugging for 30 s, or replace the battery and reset now.
Activating Manual Mode
To activate manual mode on an Ace electronic water timer, locate the Manual button on the front panel. Press and hold the button until the display flashes “Manual ON.” This overrides any programmed schedule and immediately opens the solenoid valve, allowing water to flow to the selected zone. When you wish to return to automatic operation, press the Manual button again; the display will show “Manual OFF” and the timer will resume the next scheduled cycle. If the timer does not respond, ensure the unit is powered and the battery is fresh. A dead battery can cause the Manual mode to lock; replace the battery and reset the timer by turning the power switch off for 30 seconds before restoring power. For units with a rain‑delay feature, manual mode will still honor the delay flag—if rain is detected, the valve will not open even in manual mode. To override this, first disable the rain‑delay by pressing the Rain button, then activate manual mode. Remember that manual mode only controls the solenoid valve; it does not affect the internal clock or the programmed watering times. If you need to manually water multiple zones, press the zone selector button before activating manual mode; the timer will open the valve for the selected zone only. Always check the wiring connections at the back of the unit if the valve does not open after manual activation—loose or corroded terminals can prevent water flow. Finally, keep firmware updated; some older models may have bugs that cause manual mode to toggle incorrectly, which can be fixed by updating firmware via manufacturer’s website. By following these steps, you can reliably use manual mode for quick watering tasks or emergency situations. Enjoy manual.
Common Issues and Fixes

Valve fails in manual mode. replace battery solenoid wiring. stop flow.now!!
Rain‑delay may lock the timer during precipitation. Disable the rain‑delay by pressing the Rain button, then cycle power to reset. If the rain‑delay does not lock, check the sensor and ensure the unit is grounded.unit is grounded.now
Missed watering times mean the internal clock is wrong. Set the correct time, then adjust the schedule. If the unit loses time after power loss, replace the backup battery! If loses power, replace backup battery!
An “Error” or “Fault” display indicates a short in the wiring harness. Inspect the harness for damaged insulation, cut or frayed wires, and repair or replace as needed.
If the rain‑delay does not pause watering, clean the rain sensor and test it by simulating rain. Replace the sensor if the delay still does not trigger.
Manual mode toggles off automatically if the button switch is faulty. Test the button with a multimeter; replace it if it fails.
Overheating shuts down the unit. Check the back panel for heat, allow cooling, ensure ventilation. If overheating continues, contact support for a replacement.
Intermittent water flow results from a clogged solenoid valve or low pressure. Flush the valve with clean water and check that the pressure stays within the recommended range.
If the unit does not recognize a zone selection, confirm the selector is set to the correct position before programming. If the selector fails, replace the selector switch.