Features: DC5V 4Digital Water Level Indicator Board Liquid Sensor Controller Module for Fish tank Water tower;This 4digital water level indicator module is for anyone who needs to keep tracks of liquid level. With its reliable sensors and clear display, you can quickly and easily check the status of your tank or reservoir. It can withstand harsh environments and is resistant to corrosion and wear and tear. This liquid level sensor controller module is suitable for ranges of applications, including water tanks, fish tanks, and other liquid containers. for FPGA/CPLD ARM STM32Home water tower automatic water supply system Fill the water tower automatically Automatic pumping from water towerFarm automatic water supply system Specifications: Material:ABS Length:Approx.3.2cm/1.26in Option Type:Liquid Level Sensor Module with Pin,Liquid Level Sensor Module without Pin, Working voltage: DC5V Working current 7-12MA One power indicator light, four water level indicator lights Four water level sensor interfaces (2P XH2.54) Package Includes: 1xLiquid Level Sensor Module note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.