Electronic water level indicator in the tank has a large, clear display. Easy to measure the level of liquid in the tank by the red button. Simple to install. Dimensions (H. x W. X D.) 100 mm x 60 mm x 25 mm. The indicator 9V alkaline batteries. Delivery includes: silicone connection cable, measuring 20 m cable Ø 4 mm, 3 m cable for mounting silicone.