XH-M203 12V 10A Automatic Water Level Controller Module

The XH-M203 12V 10A Automatic Water Level Controller Module is a standalone relay-based water level control board that automatically turns a water pump on when the tank water level drops below a set low point and turns it off when the water reaches the high level — without requiring any microcontroller, Arduino, or manual switching — making it a complete automatic water management solution for overhead tanks, sumps, and storage reservoirs that need continuous level maintenance without human intervention.

The XH-M203 module uses two level-sensing probes placed at the low and high water positions inside the tank, and the onboard relay circuit responds to the probe signals to control the connected pump directly. The xh-m203 water level controller operates on 12V DC supply and the onboard relay supports a maximum load current of 10A, sufficient to switch most standard single-phase water pump motors used in household and small commercial tank installations.

The automatic water level controller eliminates the need for a separate relay module, external power supply circuit, or microcontroller program — the entire detection and switching logic is handled internally by the XH-M203 module’s control circuit, connecting the sensing probes to the tank and the pump to the relay output terminals. Available from StemVolt. This xh m203 Water Level Controller module is ideal for overhead tank sump pump auto-fill home automation and STEM project automatic water level control.

Related Products:

• Explore Flow, Water and Soil Sensors

Features:

• Automatic pump control — turns pump on at low water level
• Onboard 10A relay — switches water pump directly without external relay
• Two-probe detection — low and high level probes define control range
• 12V DC supply — standard adapter powers entire controller module
• No microcontroller needed — fully standalone automatic level control circuit

Technical Specifications:

 Applications:

• Overhead tank auto-fill using XH-M203 automatic water level controller module
• India home sump pump control with xh-m203 water level controller relay
• STEM project for automatic water level controller xh m203 relay demo
• Aquarium auto top-off system with xh m203 Water Level Controller
• xh-m203 module for automatic relay-based water level control lab

Package Include:

• 1 x XH-M203 12V 10A Automatic Water Level Controller Module