Float Switch Sensor For Water Level Controller With 2 Meter Wire
📌 Overview
A Float Switch Sensor (with 2 meter wire) is a simple and reliable device used to automatically control water levels in tanks, sumps, and reservoirs.
👉 It works by floating on the water surface and switching ON/OFF based on the level.
🧠 Working Principle
The sensor contains a floating body + internal micro switch
When water level rises → float tilts upward → switch changes state
When water level drops → float falls → switch resets
👉 This action can:
Turn pump ON (low level)
Turn pump OFF (tank full)
✔ Operates mechanically without direct contact electricity in water
📊 Infographic Summary
┌──────────────────────────────┐
│ 💧 FLOAT SWITCH SENSOR (2M) │
├──────────────────────────────┤
│ 🎯 Function: Water level detect │
│ ⚡ Voltage: Up to 220–250V │
│ 🔌 Output: ON/OFF switch │
│ 📏 Cable: 2 meter │
│ 🧠 Type: Mechanical float │
│ 🔁 Control: Pump automation │
└──────────────────────────────┘
🔌 Basic Connection
┌────────────────────┐
│ Float Switch │
├────────────────────┤
│ Wire 1 → Power/Relay
│ Wire 2 → Pump/Control
└────────────────────┘
👉 Acts like a simple switch (NO/NC)
👉 Often connected through a relay or motor controller
⚙️ Key Specifications
⚡ Rated Voltage: 220V–250V AC
🔌 Current Rating: 5A – 16A
📏 Cable Length: 2 meters
🌊 Waterproof Rating: IP67 / IP68
🔁 Operation: Normally Open (NO) / Normally Closed (NC)
🧱 Material: Polypropylene (rust-proof)
🔄 Life Cycle: Up to 10 million operations
🌟 Key Features
💧 Automatic water level control
⚡ No current passes through water (safe)
🔧 Easy installation (just hang inside tank)
💰 Low cost & maintenance-free
🔁 Adjustable switching level using counterweight
🧪 Applications
🏠 Overhead water tanks
🚰 Underground tanks / sumps
🌱 Irrigation systems
🏭 Industrial liquid control
🐟 Aquariums & fountains
🚿 Automatic motor ON/OFF systems
🔄 Working Example
| Water Level | Float Position | Action |
|---|---|---|
| Low | Down | Pump ON |
| High | Up | Pump OFF |
👉 Prevents:
❌ Tank overflow
❌ Dry running of motor
⚠️ Important Notes
⚠️ Install with correct cable length and counterweight
⚠️ Avoid direct heavy current → use relay for safety
⚠️ Keep away from turbulence (waves can cause flickering)
⚠️ Ensure proper waterproof sealing
💬 Real-world insight (from Reddit):
Waves can cause rapid ON/OFF switching if not stabilized
🆚 Float Switch vs Other Water Sensors
| Feature | Float Switch | Ultrasonic Sensor |
|---|---|---|
| Type | Mechanical | Electronic |
| Cost | Low | Higher |
| Accuracy | Medium | High |
| Installation | Easy | Moderate |
| Maintenance | Very low | Moderate |
💡 Pro Tip
For a fully automatic water system:
Float Switch + Relay + Motor Starter
👉 This ensures:
✔ Automatic tank filling
✔ Motor protection
✔ No manual monitoring
