What differentiates an indoor irrigation controller from an outdoor one?

• A. Requires battery power
• B. Uses Wi-Fi connectivity
• C. Internal hard-wired power with weatherproof enclosure
• D. External plug-in power only

Answer: (C)

The distinguishing feature of an indoor irrigation controller is its requirement for internal hard-wired power and, typically, it is housed in a weatherproof enclosure. This design is essential because indoor controllers often need to operate in a stable environment where they can connect to various fixtures without the risk of exposure to outdoor elements.

Indoor controllers typically control irrigation systems from a centralized location, allowing for straightforward programming and management of water schedules. Since these systems are usually connected to mains power, the built-in weatherproof enclosure is not necessary compared to outdoor controllers, but it is a common feature to ensure safety and longevity in various environmental conditions.

In contrast, outdoor controllers are designed to withstand the elements and may rely on other features like Wi-Fi connectivity or battery power, allowing for more flexibility and remote management. The choice of power source is significant, as outdoor systems need to manage varying weather conditions and might incorporate wireless technology for convenience.