Distance measurement

[Prithiv Raj]

Hi all , I'm trying to implement an automatic trigger to switch on/off power supply. I need a sensor to measure the distance of water level in my tank. Please suggest some low cost sensors to measure distance up to 15 feet with accuracy at least 0.5cm. Thank you for your suggestions in advance. (I will be using raspberry pi to record and process the data).

[mfalkvidd]

Welcome to the MySensors community @Prithiv-Raj !
Have you looked at the distance sensor example?