Hunter NODE-400 Battery 4-Zone Waterproof Irrigation Controller — IP68 Submersible, Battery or Solar Power

The Hunter NODE-400 is a compact, battery-powered 4-station irrigation controller built to operate reliably inside valve boxes and other power-restricted outdoor locations.

Designed for sites where AC power is unavailable or impractical, the NODE-400 delivers professional scheduling features in a fully waterproof package. Its IP68-rated enclosure is submersible to 12 feet, so it survives flooded valve boxes and tough field conditions, while running on one or two 9V alkaline batteries or an optional Hunter solar panel for long-term, low-maintenance operation. The unit supports multiple programs, weather-sensor compatibility, and master valve control, making it a flexible choice for contractors, landscapers, or homeowners managing remote zones.

How does the NODE-400 schedule and control multiple zones?

The NODE-400 offers three independent programs with up to four start times per program, and each station can run for up to six hours. Seasonal adjustment lets you scale run times quickly without changing individual station settings, which helps adapt watering to seasonal needs.

• Three programs (A, B, C) for separate watering needs
• Four start times per program for flexible daily scheduling
• Individual station run times up to 6 hours
• Seasonal adjustment from 10% to 150% for quick seasonal tweaks

What makes the NODE-400 suitable for valve boxes and harsh conditions?

The controller’s IP68-rated housing is fully sealed and built to be submerged up to 12 feet, protecting electronics from water, mud, and debris. The rugged construction and secure mounting options allow placement directly in valve boxes or mounted on a surface for exposed installations.

• IP68-rated enclosure: submersible to 12 feet
• Sealed connectors and robust housing resist flood and dirt ingress
• Engineered for valve-box mounting or surface installation
• Easy Retrieve™ memory retains settings during battery changes

How is the NODE-400 powered and what are the low-maintenance options?

Out of the box the NODE-400 runs on one or two 9V alkaline batteries, making it ideal where wiring is impossible. For long-term, maintenance-free power, it accepts Hunter’s optional SPNODE solar panel kit so batteries aren’t needed for routine operation.

• Runs on one or two 9V alkaline batteries for simple installation
• Compatible with SPNODE solar panel kit (sold separately) for continuous power
• Easy Retrieve™ memory preserves programs during battery swaps
• Low power draw with support for 9V DC latching solenoids

Which irrigation accessories and sensors work with the NODE-400?

The NODE-400 supports standard 9V DC latching solenoids (solenoids sold separately) and integrates with Hunter Clik sensors and other weather-responsive devices. It also provides master valve control for systems that require central valve operation.

• Supports 9V DC latching solenoids (not included)
• Compatible with Hunter Clik and other weather sensors for rain or freeze shutoff
• Master valve/circulation pump output available
• Simple LCD interface for straightforward programming in the field

Who is this for? The Hunter NODE-400 is aimed at irrigation professionals, contractors, and homeowners needing a dependable controller where AC power isn’t feasible. It suits commercial and residential valve boxes, remote landscape zones, construction sites, and retrofit jobs that demand waterproof reliability, flexible scheduling, and minimal maintenance. Choose the NODE-400 when you need a field-ready, battery- or solar-powered 4-zone controller that stands up to floods and keeps schedules intact during battery swaps.