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Exit Wand Car Detector

Name: Exit Wand Car Detector for gate exit provided by Royal Gates
Price: 187.30 CAD
Availability: InStock

$187.30

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Exit Wand Car Detector

An Exit Wand Car Detector, also known as a magnetometer or vehicle sensor, works by sensing changes in the Earth’s magnetic field caused by the movement of metal objects, specifically vehicles.

Here’s a more detailed breakdown of how it operates:

Magnetometer: The core of an exit wand is a magnetometer. This device is highly sensitive to variations in magnetic fields.
Earth’s Magnetic Field: The Earth naturally has a magnetic field surrounding it.
Vehicle Movement: When a large mass of ferrous metal, like a car, truck, or even a heavy piece of metal equipment, moves through this magnetic field, it creates a disturbance or distortion in the field. Think of it like a boat creating waves as it moves through water.
Detection: The exit wand’s magnetometer picks up on these subtle “waves” or changes in the magnetic field as the vehicle passes by.
Signal to Gate Opener: Once the changes are detected and exceed a certain threshold (which is often adjustable for sensitivity), the exit wand sends a signal to the gate opener’s control board.
Gate Activation: The gate opener, upon receiving this signal, then automatically opens the gate, allowing the vehicle to exit the property “hands-free” – without the need for a remote, keypad, or manual intervention.

Key Characteristics and Considerations:

Motion-Activated: A crucial point is that exit wands primarily detect moving metal. If a car is stopped directly over the wand, it may lose detection.
Buried Installation: Exit wands are typically buried underground, often alongside the driveway, making them discreet and protected from weather and accidental damage.
Sensitivity Adjustment: Most exit wands have an adjustable sensitivity. This allows you to fine-tune how easily it triggers, helping to prevent false alarms from smaller metal objects like bicycles or lawnmowers, or to ensure it detects vehicles at a desired range.
Wiring: Wired exit wands have a cable that connects the wand to the gate opener’s control box. Wireless versions transmit the signal wirelessly to a receiver connected to the gate opener.
Not for Safety Loops: While they are excellent for automatic exit, exit wands are generally not recommended for use as safety loops. Safety loops (which are different, typically inductive loops buried in the driveway itself) are designed to detect any presence of metal, moving or stationary, to prevent the gate from closing on a vehicle.
Limitations: They can sometimes be triggered by very large or fast-moving metal objects even if they are not cars. Also, if they are placed too close to the gate, they might experience false triggers.

In essence, an exit wand provides a convenient and reliable way for vehicles to automatically exit a property controlled by an automatic gate, leveraging the principle of magnetic field detection.

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Category: Access Control Tags: detector, exit, gate automation, gate motor, Gate opener, gate operator, sensor, underground, wand

Description

Exit Wand Car Detector

An Exit Wand Car Detector (also known as a vehicle sensor or exit probe) is an underground sensor designed to automatically open automatic driveway gates and barrier gates when a vehicle approaches from the exit side. It provides a “hands-free” way for people to leave a property without needing a remote, keypad, or manual intervention.

Here’s a breakdown of how it works and its key features:

How it Works:

Electromagnetic Field Detection: The core principle behind an exit wand is its ability to detect changes in the Earth’s magnetic field.
Metal in Motion: When a large mass of metal, like a car, truck, ATV, or motorcycle, moves through the wand’s magnetic field, it creates a disturbance.
Signal to Gate Opener: The exit wand senses this change and sends a signal to the gate opener’s control board.
Automatic Opening: Upon receiving the signal, the gate opener activates, causing the gate to open.

Key Features and Characteristics:

Underground Installation: Exit wands are typically designed for direct burial alongside the driveway. This keeps them out of sight, protects them from damage, and can be less intrusive to install than traditional inductive loops (which require cutting into the driveway surface).
Hands-Free Exit: This is their primary benefit, offering convenience for residents and visitors leaving the property.
Magnetic Field Detection Range: They typically have a magnetic field detection range of 2 to 12 feet, which can often be adjusted for sensitivity.
Wired Connection: Most exit wands are wired directly to the gate opener’s control box.
Compatibility: They are generally compatible with a wide range of automatic gate openers that provide accessory power and a normal open/dry contact signal input.
Durability: Being designed for underground use, they are often waterproof (e.g., IP68 rated) and built to withstand varying temperatures.
Sensitivity Adjustment: Many models allow you to adjust the sensitivity, which can be important to prevent false triggers from smaller metal objects (like lawnmowers) or to optimize detection for different vehicle types.
Limitations: While effective for moving vehicles, exit wands typically only detect metal in motion. They may not detect a vehicle that has stopped directly over the sensor.

Why use an Exit Wand?

Convenience: No need to stop and search for a remote or enter a code when leaving.
Security: Provides a reliable way for authorized vehicles to exit.
Reduced Wear and Tear: Less reliance on manual operation of the gate.
Relatively Easy Installation: Compared to inductive loops, direct burial wands can be simpler to install, especially for existing driveways.

In summary, an Exit Wand Car Detector is a practical and convenient solution for automating the exit from properties with automatic gates, relying on magnetic field detection to provide a seamless, hands-free experience.

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