The WD-900 series of photoelectric water immersion sensors has two types: W-900C and WD-900D. The WD-900C photoelectric water immersion sensor has two output modes: current output and voltage output. The WD-900D photoelectric water immersion sensor is a switch output type (often closed or normally open), both of which use photoelectric liquid level sensing heads as sensing elements. When the sensor is immersed in liquid, the power supply forms a current injection into the signal terminal to monitor changes in liquid level.

This series of products is applied to air conditioning stations, precision computer rooms, hotels, restaurants, museums, libraries, warehouses, urban water supply, high-rise water tanks and other places that require alarm for water leakage and accumulation, as well as monitoring of coolant storage tanks; Medical clinics, disinfection, cleaning, and dialysis equipment; Warning of low lubricant leakage in machine tools, general facilities, or high-speed transportation vehicles; Low level warning for hydraulic system oil tank.

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