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{"title":"Sliding Glass Door Sensor | RD24-4S | High Precision | 1.5S Signal Hold","imgUrl":"https:\/\/img.chinax.com\/nimg\/e8\/0e\/e39e2d1462df994be07124e15e49-200x200-1\/sliding_glass_door_sensor_7c_rd24_4s_7c_high_precision_7c_1_5s_signal_hold.jpg","attrs":{"Brand Name":"JUTAI","Model Number":"RD24-4S","Certification":"CE","Place of Origin":"Shenzhen China"}}
{"title":"Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivit","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/c5\/05c0a53bfb3784397bb79150937f-200x200-1\/doppler_detector_24_125ghz_7c_planar_antenna_7c_temperature_resistant_7c_sensitivity.jpg","attrs":{"Brand Name":"JUTAI","Model Number":"RD24-4S","Certification":"CE","Place of Origin":"Shenzhen China"}}
{"title":"Commercial Door Sensor | 24.125GHz Microwave | Compact Size | IP54 Waterproof","imgUrl":"https:\/\/img.chinax.com\/nimg\/58\/05\/63f5672c1b89884208feb99466c0-200x200-1\/commercial_door_sensor_7c_24_125ghz_microwave_7c_compact_size_7c_ip54_waterproof.jpg","attrs":{"Brand Name":"JUTAI","Model Number":"RD24-4S","Certification":"CE","Place of Origin":"Shenzhen China"}}
{"title":"Glass Door Sensor RD24-4S | Low Power \u22642W | Adjustable Tilt Angle Durable and","imgUrl":"https:\/\/img.chinax.com\/nimg\/cf\/ee\/fb2f3b3735e83b2fab5d514e5f07-200x200-1\/glass_door_sensor_rd24_4s_7c_low_power_e2_89_a42w_7c_adjustable_tilt_angle_durable_and_sensitivity.jpg","attrs":{"Brand Name":"JUTAI","Model Number":"RD24-4S","Certification":"CE","Place of Origin":"Shenzhen China"}}
The RD24-4S Doppler Detector is a professional high-performance motion sensing device built for heavy-duty commercial access and automatic door systems, featuring a 4m×2m wide detection field and industry-leading high precision motion sensing, making it the top choice for large-entry commercial spaces, office lobbies, shopping malls and retail outlets. Powered by mature 24.125GHz microwave Doppler technology, this detector delivers an expansive 4-meter width and 2-meter depth detection range at the standard 2.2m mounting height, fully covering large commercial entryways and wide sliding glass door passages without dead zones, ensuring every approaching pedestrian is accurately captured. Its high-precision sensing core excels at identifying subtle human movement at a minimum speed of 5cm/s, with an intelligent algorithm that strictly filters out false triggers from environmental vibrations, floating debris and non-human motion, eliminating frequent door malfunctions caused by misdetection.
Unlike ordinary detectors with narrow or unstable sensing ranges, this model balances wide coverage and precise targeting, adapting to various installation positions and door types without repeated calibration. Encased in a sturdy ABS housing, it features stable performance in complex electromagnetic environments, resists daily wear and tear, and complies with R&TTE and EMC international certifications for safe, interference-free operation. With plug-and-play compatibility and consistent signal output, it seamlessly integrates with mainstream automatic door control systems, requiring no complex setup. Combining a generous wide detection field and ultra-high precision, this Doppler detector stands as a reliable, long-lasting solution for commercial-grade motion sensing needs.
Product Highlights
24.125GHz mainstream microwave frequency for stable motion detection (≥5cm/s)
Wide detection field: 4m(W)*2m(D) at 2.2m mounting height
Wide voltage supply: 12-24V AC/DC with low power consumption (≤2W)
IP54 protection & -20℃~+55℃ working temperature for indoor/outdoor semi-enclosed use
Easy installation & adjustment with compact size, sensitivity potentiometer, and clear LED status prompt
Reliable output: 1.5s signal hold, 42V AC/DC max contact voltage, 1A resistive current
Technical Specifications
Parameter
Specification
Technology
Microwave Doppler Radar
Transmitter Frequency
24.125GHz
Transmitter Radiated Power
<20 dBm EIRP
Transmitter Power Density
≤5mW/cm
Maximum Mounting Height
3m
Tilt Angles
0°~90° vertical; -30°~+30° lateral
Detection Field (2.2m mounting)
4m(W)*2m(D)
Detection Mode
Motion detection
Minimum Detectable Speed
5cm/s (sensor axis)
Supply Voltage
12-24V AC ±10%; 12-24V DC +30% / -10%
Mains Frequency
50-60Hz
Power Consumption
≤2W(VA)
Output Mode
Switch tube output
Signal Output Time
1.5s hold
Max Contact Voltage
42V AC/DC
Max Contact Current
1A (resistive)
Max Switching Power
30W(DC) / 60VA(AC)
Working Temperature Range
-20℃ ~ +55℃
Degree of Protection
IP54
Norm Conformity
R&TTE 1999/5/EC; EMC 89/336/EEC
Material
ABS
Housing Color
Black/Silver
Dimensions (W*H*D)
120mm*80mm*50mm
Net Weight
0.215kg
Cable Length
2.2m
Installation & Adjustment Guide
The sensor's performance is closely related to correct installation and adjustment. Simple operation with no professional tools required:
Mounting Requirements
Avoid vibration positions, neon lamp proximity and sensor occlusion; do not touch internal electronic parts during installation.
Sensitivity Adjustment
Rotate the sensitivity potentiometer gently and slowly; the sensitivity value determines the size of the detection field (adjust to 1/2 or higher for short detection distance).
Angle Adjustment
Planar antenna lateral angle = detection field position; vertical angle = detection field depth; set microwave module angle to ≥45° for optimal detection.
Status Check
LED flashes after power-on (normal standby); LED lights up continuously when a moving target is detected (detection trigger).
Troubleshooting Guide
Fault Phenomenon
Probable Causes
Corrective Action
Door does not open & LED no light
Sensor power off
Check wiring connection and power supply validity
Door opens/closes constantly
Sensor detects door vibration/movement; interference source in detection range
Fix the sensor firmly; increase tilt angle/reduce sensitivity; remove interference sources in the detection field
Industrial Automation: Conveyor belt motion detection, equipment start/stop induction (light industry production lines)
Intelligent Building: Smart lighting induction, air conditioning induction (public areas such as corridors and elevators)
Core Technologies
Microwave Doppler Radar Sensor24.125GHz Radar SensorAutomatic Door Motion DetectorWide Field Detection SensorIP54 Motion Sensor
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Seller
Year Established:
2012
Employee Number:
30~50
Ecer Certification:
Verified Supplier
JUTAI is dedicated to the research and development as well as system integration of security products, achieving an intelligent one unified platform that integrates access control, parking management (parking charging system and parking guidance system), traffic lights system, and o...
JUTAI is dedicated to the research and development as well as system integration of security products, achieving an intelligent one unified platform that integrates access control, parking management (parking charging system and parking guidance system), traffic lights system, and o...