Automatic Sliding Door Microwave Sensor 24.125GHz 12V-24V

A high-precision microwave radar motion detector operating at 24.125 GHz, engineered specifically for the automated control of sliding, revolving, and commercial automatic doors. Utilizing Doppler radar technology, it tracks human and vehicle motion with rapid response times regardless of ambient temperature or lighting conditions. It features versatile dual-voltage power support (12V–24V AC/DC) and a clean dry contact relay output (COM/NO) for seamless integration with major door control boards in retail centers, airports, and smart buildings.

Product Features:

• High-frequency 24.125GHz Doppler microwave antenna for ultra-responsive motion tracking.
• Fully adjustable antenna bracket supporting both vertical and horizontal angle tuning.
• Wide operating voltage range supporting 12V to 24V (AC/DC).
• Standard dry contact relay output (COM/NO) compatible with all automatic door controller boards.
• Built-in potentiometer for precise detection range and sensitivity adjustment.
• Durable, fire-retardant industrial-grade ABS housing.

💡 Technology (Simply Explained):

The sensor operates on active microwave radar principles utilizing the Doppler effect. The transmitting antenna emits high-frequency electromagnetic waves at 24.125 GHz across the entryway. When a person or object approaches, the reflected wave frequency shifts; the internal receiver module detects this frequency variation instantly and triggers the output relay to send an immediate open command to the door controller without mechanical delay.

Orientation & Coverage:

Provides full flexibility to customize the detection field to match entryway geometry. The internal antenna can be tilted vertically from 0° to 45° to adjust forward detection depth (up to 4.5 meters at an installation height of 2.2 meters) and rotated horizontally ±30° left or right to align coverage directly in front of the door path, preventing unnecessary activations caused by parallel pedestrian traffic.

Compatibility:

Fully compatible with all commercial automatic sliding, swing, and revolving door mechanisms across hotels, supermarkets, hospitals, and access-controlled transit gates. Connects directly to the main printed circuit board assembly (PCBD) via standard dry contact trigger terminals (Normally Open - NO).

Load & Power Limits:

Designed strictly for low-voltage signal triggering. The internal relay output handles up to 40V DC at 20mA maximum. Direct connection to mains 220V power or driving high-load electric door motors directly through the sensor terminals is prohibited; it must interface solely with the controller's trigger input.

Practical Applications & Use Cases:

Ideal for commercial glass sliding doors in retail stores, pharmacies, hospital entrances, hotel lobbies, and elevator waiting zones. Delivers smooth, hands-free entry for continuous foot traffic while preventing false triggers when individuals move laterally past the entrance.

Automation & Logic Sequences:

Enables seamless building automation workflows. The sensor trigger signal can simultaneously activate door opening mechanisms, trigger welcome lighting sequences, or temporarily cycle air curtain fans via the central automation control unit before initiating a timed close sequence once the radar field is cleared.

Technical Specifications:

• Radar Frequency: 24.125 GHz Microwave
• Supply Voltage: DC 12V-27V / AC 12V-24V
• Output Type: Dry Contact Relay (COM / NO)
• Output Current Capacity: 40V DC (20mA)
• Mounting Height: 2.2m to 3.5m
• Detection Range: 1 to 4.5 Meters (Adjustable)
• Vertical Antenna Tilt: 0° to 45°
• Horizontal Antenna Rotation: -30° to +30°
• Self-Calibration Time: Approximately 5 seconds

Physical Specifications:

• Mounting Method: Surface Mount (Transom / Wall / Ceiling)
• Housing Material: Flame-retardant industrial ABS plastic
• Color: Matte Black
• Terminal Interface: Built-in 4-pin JST connector
• Status Indicator: Integrated LED for power and detection status

Package Contents:

• 24.125GHz Automatic Door Microwave Radar Sensor.
• 4-wire connection cable with JST connector.
• Surface mounting screw set.
• Installation manual and wiring schematic.

Keywords:

Microwave Sensor, Automatic Door Radar, 24GHz Sensor, Sliding Door Opener, Motion Detector, 12V 24V Sensor, Abhir

Complete Your Setup (Frequently Bought Together):

• Quick-connect wire terminal block.
• 12V 2A DC Power Adapter.
• Emergency push-to-exit button for automatic doors.

Helpful Resources & Videos:

• Guide on adjusting radar sensitivity and coverage angles.
• Wiring diagram for popular sliding door control boards.

Frequently Asked Questions (FAQs):

What is the advantage of microwave sensors over PIR for automatic doors?

Microwave sensors emit active radar waves, providing faster detection speeds, wider range, and zero performance drop in variable temperatures, making them ideal for high-traffic automated commercial doors.

How is the 4-wire connection cable wired?

The green and brown wires connect to the power input (12V-24V AC/DC), while the white and yellow wires connect to the dry contact signal terminals (COM and NO) on the door control board.

What should be done immediately after applying power?

Stand outside the sensor detection area for approximately 5 seconds after power-up to allow the unit to complete its automatic self-adjustment routine.

Installation & Wiring:

1. Open the outer housing cover and mount the base securely centered above the door transom at an optimal height (approx. 2.2m).
2. Connect the 4-wire JST harness into the rear connector port:

• Green & Brown wires: Power supply lines (12V-24V AC/DC).
• White & Yellow wires: Relay signal leads (COM & NO) to the door controller's open trigger terminals.

1. Adjust the vertical tilt and horizontal rotation of the antenna, then turn the sensitivity potentiometer (Range) to set the required coverage depth and width.
2. Snap the front cover back in place, switch on power, and remain outside the detection area for 5 seconds to complete self-calibration.

⚠️ Safety Precautions:

1. Disconnect main power supply before connecting wiring to the door control board.
2. Verify correct input voltage (12V-24V AC/DC); connecting 220V mains voltage directly to the sensor leads will cause permanent hardware damage.
3. Avoid pointing the radar antenna towards continuously moving objects such as ventilation fans or plants to eliminate phantom triggers.

🔄 Cancellations, Returns & Exchanges

Abhir Online is committed to a clear and fair policy that safeguards and outlines the rights of both the customer and the store. To streamline your experience, please read the terms of our Cancellation, Return and Exchange Policy and our Policies and Customer Rights Page. You can find them at the bottom of the homepage, and they will also appear on the Checkout Page. 🤝

Installation & Wiring:

1. Open the outer housing cover and mount the base securely centered above the door transom at an optimal height (approx. 2.2m).
2. Connect the 4-wire JST harness into the rear connector port:

• Green & Brown wires: Power supply lines (12V-24V AC/DC).
• White & Yellow wires: Relay signal leads (COM & NO) to the door controller's open trigger terminals.

1. Adjust the vertical tilt and horizontal rotation of the antenna, then turn the sensitivity potentiometer (Range) to set the required coverage depth and width.
2. Snap the front cover back in place, switch on power, and remain outside the detection area for 5 seconds to complete self-calibration.