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Microwave Radar | RD24-4S | Easy Installation | Temperature Resistant Fast Response
This RD24-4S Microwave Radar stands out as a versatile motion detection solution for all door access systems, engineered with effortless installation, robust temperature resistance and ultra fast response—three core strengths that make it a top choice for commercial, retail and industrial settings. Built on professional 24.125GHz microwave Doppler technology, its fast response capability instantly detects valid motion targets moving at ≥5cm/s along the sensor axis, delivering real-time trigger signals for automatic doors, sliding glass doors and commercial entryways, eliminating lag and ensuring smooth, timely access for high-traffic footfall. No complex wiring or professional tools are needed for its easy installation: the compact ABS housing (120×80×50mm) and lightweight 0.215kg build enable direct surface mounting, the 2.2m pre-wired cable fits JST and relay interfaces, and the intuitive LED status indicator and gentle-adjust sensitivity potentiometer simplify one-step calibration right after mounting.
What elevates this radar further is its exceptional temperature resistance, operating stably in an extreme range of -20℃ to +55℃. It performs reliably in cold winter outdoor covered entryways and hot summer indoor commercial spaces without signal drift or performance drop, far exceeding ordinary sensors’ environmental adaptability. Paired with IP54 dustproof and waterproof protection, it resists daily dust, splashes and wear, ensuring long-term durability in harsh working conditions. With low power consumption (≤2W) and wide 12-24V AC/DC voltage compatibility, it integrates seamlessly into existing power setups without additional adapters. Compliant with R&TTE and EMC international standards, this RD24-4S Microwave Radar combines easy setup, all-temperature adaptability and fast motion response, making it a plug-and-play, low-maintenance motion sensing solution for diverse door automation needs.
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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...