A compact and efficient mini submersible water pump designed for small-scale fluid movement in electronics, DIY, and automation projects. Operating on 3–6V DC, this pump is perfect for Arduino, ESP32, and battery-powered applications.
With a flow rate of up to 120 litres per hour and low power consumption, it provides a simple and reliable solution for pumping water in compact systems.
Key features
- 3V–6V DC operation – ideal for low-voltage systems
- Flow rate up to 120L/hour
- Low current consumption (~220mA)
- Compact and lightweight design
- Fully submersible for easy use
- Simple 2-wire connection
How to use
- Attach a suitable tube/pipe to the outlet nozzle
- Fully submerge the pump in water
- Connect to a 3–6V DC power supply
Note: Do not run the pump dry, as it relies on water for cooling and lubrication.
Specifications
| Operating voltage | DC 3V – 6V |
| Current consumption | ~220mA |
| Flow rate | Up to 120L/hour |
| Type | Submersible water pump |
| Outlet outer diameter | 7.5mm |
| Outlet inner diameter | 5.0mm |
| Inlet diameter | 5.0mm |
Common applications
- Arduino and ESP32 water projects
- Automatic plant watering systems
- Mini fountains and aquariums
- Cooling systems and liquid circulation
- DIY science and STEM projects
- Hydroponics and small irrigation setups
Tip: Use a transistor or relay module when controlling the pump with a microcontroller to avoid drawing too much current directly from the board.












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