About This [Automatic Drainage]: Ensures unattended bilge water removal with reliable automatic pump activation, maintaining safe water levels and preventing flooding risks on boats. [Wide Application]: Compatible with 12V, 24V, or 32V bilge pumps or alarms, featuring ultrasonic welding for superior waterproof sealing and stable performance in marine environments. [Precise Operation]: Activates pump when water rises above 1.77-1.97 inches and shuts off below 0.79-0.98 inches, ensuring efficient water management without manual intervention. [Easy Installation]: Designed for horizontal mounting up to a 30-degree angle inside the bilge, compatible with most bilge pumps (pump not included), enabling quick and secure setup. [Durable Material]: Constructed from heavy-duty ABS plastic and internal metal contacts for long-lasting reliability, resistance, and consistent electrical connectivity in harsh conditions. Overview Brand : QWUUYEC Power Source : AC/DC Manufacturer : QWUUYEC Unit Count : 1.0 Count