Both exit wands and loop detectors sense vehicles for automatic gate operation, but they work differently and suit different situations.
Loop Detectors
How They Work
- Wire loop buried in pavement
- Senses metal mass
- Connected to detector module
Advantages
- Very reliable
- Works in all weather
- Invisible installation
- Industry standard
- Long lifespan
Disadvantages
- Requires pavement cutting
- More expensive to install
- Can fail if pavement moves
- Not for gravel driveways
Exit Wands
How They Work
- Metal probe on flexible mount
- Vehicle physically contacts wand
- Contact triggers switch
Advantages
- Lower installation cost
- Works on any surface
- Easy to install
- No pavement cutting
Disadvantages
- Visible installation
- Can be damaged by snow plows
- May miss high-clearance vehicles
- Requires physical contact
When to Choose Loops
- Paved driveways
- Desire invisible detection
- High-use applications
- Permanent installations
When to Choose Wands
- Gravel driveways
- Budget constraints
- Temporary installations
- Easy replacement needed
Cost Comparison
- Loop detector: $400-800 installed
- Exit wand: $150-350 installed
Expert Guidance
Standard Gate Co helps you choose the right vehicle detection method. Call (323) 488-GATE for recommendations.