Electrode-type water level controller uses electrode rods enclosed in a plastic insulating sleeve. It features an anti-short circuit design, preventing malfunctions caused by moisture or conductivity of the tank or well wall. The sensor operates based on the conductivity of water in boilers. As the water level changes, electrode rods of varying lengths make or break contact with the water, opening or closing the electrical circuit. This generates a signal reflecting the water level change, which can be transmitted and processed externally. The sensor relies on water conductivity as its working principle, ensuring stable sensing performance, minimal false signals, and reliable detection and transmission of water-level position signals. Its simple structure contributes to a long service life. It resists corrosion, electrode detachment, and surface scaling. Maintenance is straightforward and minimal. Important Notes: 1. The level sensor must be fully submerged in water to measure water level accurately. Direct measurement between the sensor and common pole is prohibited. 2. If the standard sensor length is insufficient, users may extend the wiring using shielded cable to prevent lightning damage and controller failure. Product Name: Water Level Sensor Key Feature: High-temperature resistant up to 105°C Applications: Solar energy systems, air conditioning units Color: White + Red + Blue Material: ABS + Stainless Steel Available Lengths: 1.5 m, 2.5 m, 3.5 m Package Includes: 3 × Water Level Controllers Note: Package contains only the items listed above. Lighting and monitor settings may cause slight color variations.