Hunter 4-Station Battery-Powered Irrigation Controller — Blue, Waterproof Valve-Mount

The Hunter NODE400 is a compact, battery-powered 4-station irrigation controller that mounts directly to a valve solenoid for reliable remote watering where AC power or central controllers aren’t available.

Designed for isolated valves, remote zones, and locations with limited power, the NODE400 delivers simple, durable automatic irrigation without extra wiring or a large enclosure. Its waterproof housing and straightforward LCD programming let you set up scheduled watering quickly while relying on 9V batteries for seasonal operation. The unit follows familiar Hunter programming conventions, making it easy for landscapers and property managers to integrate into existing irrigation workflows.

How does the NODE400 handle power in off-grid sites?

The NODE400 runs on one or two 9V batteries to provide either standard or extended runtime through a season. Using battery power eliminates the need for an AC supply or transformer at the valve location, simplifying installation and reducing ongoing electrical concerns.

• Operates on one 9V battery for standard use or two 9V batteries for longer life
• No external power or additional wiring required at the valve
• Battery compartment designed for quick, tool-free replacement

What makes the NODE400 simple to install and maintain?

The NODE400 attaches directly to the valve solenoid without screws, drilling, or extra wires, so setup is fast and keeps valve boxes tidy. Its robust, waterproof enclosure protects electronics from wet conditions commonly found in valve boxes, minimizing service visits.

• Quick mount to standard solenoids — no modification of valve box needed
• Waterproof construction for reliable outdoor use in valve boxes
• Clear LCD and intuitive controls allow fast programming and troubleshooting

Which programming options and features does it offer?

The NODE400 uses familiar Hunter controller logic with three separate programs and up to four start times per program, enabling flexible scheduling for different plant types or sun exposures. It supports manual operation for single-station activation and includes features that help conserve water and match common irrigation practices.

• 3 independent programs with 4 start times each for tailored schedules
• Manual station operation for testing or one-off watering needs
• Compact LCD interface uses standard Hunter programming steps for quick learning

How durable is the NODE400 in harsh valve-box environments?

Built to withstand the damp, soil-filled conditions of valve boxes, the NODE400’s rugged exterior seals out moisture and debris to protect internal components. That durability reduces the likelihood of corrosion or malfunction compared with non-sealed electronics.

• Sealed, impact-resistant housing designed for buried or in-ground valve enclosures
• Solid construction that resists common field hazards like moisture and dirt
• Designed to minimize callbacks and extend service intervals in harsh settings

Who this is for: The Hunter NODE400 is ideal for landscape professionals, ranchers, golf course superintendents, and homeowners who need dependable automatic watering at remote valves without running power or adding complex wiring. It’s especially useful for isolated zones, pump-fed systems, or temporary irrigation setups where a compact, low-maintenance controller provides a practical, long-lasting solution.