Feature: Specification: Item Type: Water Level Alarm Detector Package List: 1 x Water Level Alarm Detector1 x Double-Sided Tape 1 x Power Cable Note: During installation, point L of the lowest water level probe must be at the bottom end, and point H of the highest water level probe at the top end. The alarm cannot be placed in water or wetted by water. Just put the probe in the water, change the battery, please recognize the positive and negative poles. |