Microwave Radar Door Sensor, 24GHz, 12-30V AC/DC

The SUCH-MS-ARG-K12H is a one-way microwave door sensor designed to detect approaching motion while filtering out departing signals, effectively preventing false door openings caused by door vibration or non-approaching objects. Operating at 24.125GHz with microwave and microprocessor-based detection, it covers a 4m (W) × 2m (D) zone at a 2.2m mounting height, with adjustable sensitivity, horizontal angle (-30° to +30°), and vertical tilt (0° to 90°) for precise zone tuning. Rated for 12-30V AC/DC input and IP54 protection, the sensor is well suited for automatic doors, high-speed doors, and other entry systems requiring reliable one-directional activation.

Feature

• Approach-only detection – Detects incoming movement while ignoring reverse-direction motion, helping prevent unnecessary door activation.
• 24.125GHz microwave sensing – Combines microwave and microprocessor technology for stable, light- and dust-independent detection.
• Adjustable sensitivity potentiometer – Allows fine control of detection distance to match different door widths and installation conditions.
• Flat antenna with wide adjustment range – Vertical tilt from 0° to 90° and horizontal angle from -30° to +30° enable flexible coverage of the area in front of the door.
• 4m (W) × 2m (D) detection zone at 2.2m mounting height – Supports mounting heights up to 5m for various door and entrance configurations.
• Wide voltage input, 12-30V AC/DC – Compatible with most automatic door control systems; power consumption below 2W.
• Relay output (NO/COM), up to 30W DC / 60VA AC – Enables direct, reliable integration with standard door controllers.
• IP54-rated ABS housing, -20°C to +55°C – Durable construction for indoor and semi-outdoor installation environments.

Dimension (Unit:mm)

Details

Fig 1: Microwave door sensor exterior details

Fig 2: Microwave door sensor internal details

Installation Tips

• Securely mount the sensor to prevent vibration
• Do not install the sensor behind a panel or other materials
• Do not place movable or shaking objects in the detection area
• Do not have fluorescent lights in the detection area
• Avoid touching the electronic components of the sensor
• Adjust the sensitivity potentiometer gently and slowly

Detection

1. Sensitivity potentiometer adjustment (MIN to MAX) determines the detection area

2. Antenna horizontal angle (left/right, -30° to +30°) determines the detection area in front of the door

3. Antenna vertical tilt angle determines the detection area