Tank Pool Horizontal Water Level Float Switch Sensor
Liquid Level Sensor with PP Plastic Ball for Arduino
This horizontal float switch provides accurate liquid level detection for tanks, pools, and reservoirs. Its PP plastic construction ensures durability and corrosion resistance for water-based applications[citation:2].
Simple ON/OFF Output - Digital signal for easy Arduino integration
Durable PP Material Corrosionresistant for long-term use
Operates as a reed switch - treat as a sensor, not a power switch
Use 10kΩ pull-down resistor for stable Arduino readings
Max switching current is 0.5A - use a relay for loads
Technical Specifications
| Parameter | Value |
|---|
| Material | Polypropylene (PP) |
| Mounting | Horizontal side-mount |
| Contact Rating | 10W max |
| Switching Voltage | 100V DC max |
| Switching Current | 0.5A max |
| Temperature Range | -10°C to +85°C |
| Output | Digital ON/OFF (reed switch) |
= Key Features =
CorrosionResistant PP Suitable for water and non-corrosive liquids
Configurable Output - Can be wired as NO or NC
Compact SideMount Design Easy tank wall installation
Long Service Life - Reliable reed switch mechanism
Simple Integration 2wire interface for Arduino[citation:2]
= Applications =
- Tank and reservoir level monitoring[citation:1]
- Pool water level control[citation:2]
- Hydroponics and irrigation systems
- Aquarium water level automation
- Pump control and alarm systems
- IoT water monitoring projects
Reliable Level Detection - Mechanical float actuation
Arduino Compatible - Simple digital input
√ 2-wire connection for easy wiring
√ Corrosion-resistant PP construction
√ Works with Arduino, ESP32, Raspberry Pi[citation:2]
Connection Guide
Wiring to Arduino:
- One wire: Connect to 5V or 3.3V
- Other wire: Connect to digital input pin
- Add 10kΩ pull-down resistor to ground
Reading the sensor:
- Use
digitalRead(pin) to get state - HIGH = float up (or down, depending on orientation)
- LOW = float down (or up)
Mount sensor at desired trigger level
Flip sensor orientation to change NO/NC behavior[citation:2]
Do not exceed 0.5A through the switch
Use a relay for pumps or high-current loads[citation:1]
Wiring Tips
Always treat this as a low-current signal device. For controlling pumps or other loads, use the sensor to trigger a microcontroller, which then activates a relay or MOSFET[citation:1]. This protects the reed switch from damage.
Simple Interface - Just two wires and a resistor
Safe Operation Lowcurrent sensing protects the switch
Used in hydroponics and aquariums
Reliable and cost-effective
√ 10W contact rating for control signals
√ PP body resists water damage
Troubleshooting
Sensor not triggering:
- Check orientation - float may need to be up or down
- Verify pull-down resistor connection
- Avoid loose wiring
Erratic readings:
- Ensure sensor is securely mounted
- Check for debris blocking float movement
- Use software debounce in Arduino code