This handy module for water storage units is a great aid for tracking your water supply battery powered level indicator is used to measure the level of water tanks such as rain water clarification chambers and slurry tanks from distances of up to 100 m the display is carried out at the push of a button via 10 leds in increments of 10 display 10 100 the unit can quickly and easily be mounted on a wall or post approx 131 x 78 x 36 mm and requires 2 aa batteries the electrical connecti