Winland WB-200 WaterBug Moisture Detection System

The Winland WB-200 WaterBug is a hardwired electronic water detection system designed to identify leaks and standing water in basements, server rooms, warehouses, and equipment areas. It includes one W-S-U unsupervised surface water sensor and supports up to six sensors connected in parallel. Operating on 8-28VDC at 35mA or 12-28VAC at 100mA, the WB-200 features a Form C relay rated at 1A for integration with compatible alarm panels and monitoring systems. Its conductive sensing technology detects water without triggering from normal humidity or condensation.

Winland WB-200 WaterBug Electronic Water Leak Detection System with Surface Sensor

The Winland WB-200 WaterBug Water Detection System monitors the presence or absence of conductive water in locations vulnerable to leaks, flooding, and moisture accumulation. The system includes a hardwired control unit and one W-S-U unsupervised surface sensor that detects water when moisture forms an electrical bridge between its metal contacts. Once water is detected, the controller changes its relay output state to activate a connected alarm panel, monitoring system, or external notification device. The WB-200 supports water detection around sump pumps, water heaters, plumbing equipment, server racks, and document storage areas. Its sensing method does not trigger from normal humidity or condensation and cannot reliably detect distilled, deionized, or rainwater.

The WB-200 operates on 8-28VDC at 35mA or 12-28VAC at 100mA and provides one Form C single-pole, double-throw (SPDT) relay with normally open and normally closed contacts. The relay is rated for 1A at 30VDC or 1A at 24VAC with resistive loads, allowing connection to compatible hardwired alarm systems, wireless transmitters with contact inputs, and external signaling equipment. The non-latching output remains in the alarm state while water bridges the sensor contacts and automatically returns to normal when the contacts are dry. The controller requires an external power source and does not include a built-in audible alarm, cellular communicator, or independent notification service.

The Winland WB-200 supports up to six unsupervised water sensors wired in parallel using 18-22 AWG twisted-pair cable. Installations using one or two sensors support a maximum recommended distance of 200 feet per sensor, while configurations with three to six sensors support up to 100 feet per sensor. The included W-S-U surface sensor measures 3.0 x 2.0 x 0.88 inches and can be mounted on floors to detect leaks or vertically to monitor rising water levels. Additional W-S-U surface sensors and compatible W-UC-U under-carpet sensors extend detection to separate locations. Because the sensors are unsupervised, a disconnected sensor wire does not independently generate a supervisory trouble signal.

The WB-200 control unit measures 4.10 x 2.36 x 1.18 inches and includes mounting flanges for installation on a wall or other vertical surface. The controller is rated for indoor operation from 32 F to 130 F (0 C to 54.4 C) in noncondensing environments, while the remote W-S-U sensor can operate in condensing environments, including suitable cooler and freezer applications. The controller must remain outside these cold or condensing areas. The system integrates with compatible security panels and environmental monitoring equipment through its dry-contact relay output. Winland recommends weekly operational testing to verify sensor response, wiring integrity, and alarm signaling. The WB-200 is intended for water leak detection and requires an external alarm or monitoring device to provide notifications.