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Microwave Motion Sensor

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity

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Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity

Brand Name:	JUTAI
Model Number:	RD24-4S
MOQ:	100
Price:	4-6 USD according to order quantity
Packaging Details:	Carton
Payment Terms:	T/T,paypal,alipay,Western Union

Detail Information

Product Description

Detail Information

Place of Origin:

Shenzhen China

Certification:

Maximum Mounting Height:

Technology:

Microwave Doppler Radar

Transmitter Frequency:

24.125GHz

Transmitter Radiated Power:

<20 DBm EIRP

Transmitter Power Density:

≤5mW/cm

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:

Norm Conformity:

R&TTE 1999/5/EC; EMC 89/336/EEC

Material:

Housing Color:

Black/Silver

Dimensions (W×H×D):

120mm×80mm×50mm

Net Weight:

0.215kg

Cable Length:

Supply Ability:

5000 pcs per month

Highlight:

24.125GHz Doppler detector

microwave motion sensor with planar antenna

temperature resistant motion detector

Product Description

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity

This 24.125GHz Doppler Detector is a high-adaptability motion sensing solution for automatic door, commercial access and light industrial automation scenarios, engineered with a high-gain planar antenna, robust temperature resistance and fully adjustable sensitivity—delivering consistent, tailored performance across diverse environmental and usage conditions. Tuned to the reliable 24.125GHz microwave band, its integrated planar antenna is optimized for uniform signal transmission, creating a smooth, blind-spot-free detection field that captures motion targets moving at ≥5cm/s with clear, unbroken signals; the antenna’s design also enhances signal focus, avoiding over-sensing of irrelevant areas and ensuring precise detection aligned with your specific setup, whether mounted at the standard 2.2m height or max 3m for commercial entryways.

A key advantage is its exceptional temperature resistance, operating stably in an extreme range of -20℃ to +55℃ without signal drift or performance degradation. It performs reliably in cold outdoor covered entryways during winter, hot indoor commercial spaces like mall atriums in summer, and even temperature-fluctuating industrial areas, far outpacing ordinary detectors in environmental adaptability. The customizable sensitivity feature lets you fine-tune the detection range via a gentle-rotate potentiometer—lower sensitivity for narrow passageways to prevent false triggers from ambient movement, or raise it for high-traffic zones to ensure full coverage—no professional tools or technical expertise required for calibration.

Built for long-term usability, this detector features an IP54 dustproof and waterproof rating, resisting daily splashes and dust accumulation, with ultra-low power consumption (≤2W) and 12-24V AC/DC wide voltage compatibility for seamless integration with existing control systems. A clear LED status indicator provides real-time power and detection feedback for quick setup and troubleshooting, and it complies with R&TTE and EMC international standards for interference-free operation near neon lamps and electronic equipment. Blending planar antenna precision, all-climate temperature resistance and flexible sensitivity, this 24.125GHz Doppler Detector is a versatile, low-maintenance motion sensing choice for diverse commercial and light industrial applications.

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity 0

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity 1

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
Flexible angle adjustment: 0°~90° vertical / -30°~+30° lateral tilt
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 (WHD)	120mm80mm50mm
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
Detection distance is too close	Low sensitivity; microwave module angle <45°; sensor blocked	Adjust sensitivity potentiometer to 1/2 or higher; set module angle to ≥45°; remove occluding objects

Application Scenarios

The RD24-4S is a multi-scenario motion detection sensor with high adaptability, primarily applicable to:

Automatic Door Systems: Sliding doors, swing doors, glass induction doors (commercial buildings, shopping malls, office buildings)
Security & Monitoring: Perimeter security detection, indoor human motion induction (residential, factory, warehouse)
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 Sensor 24.125GHz Radar Sensor Automatic Door Motion Detector Wide Field Detection Sensor IP54 Motion Sensor

Tags:

High Sensitivity Motion Sensor

Automatic Door Sensors

Microwave Motion Detector

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Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity

Brand Name:	JUTAI
Model Number:	RD24-4S
MOQ:	100
Price:	4-6 USD according to order quantity
Packaging Details:	Carton
Payment Terms:	T/T,paypal,alipay,Western Union

Detail Information

Product Description

Detail Information

Place of Origin:

Shenzhen China

Brand Name:

JUTAI

Certification:

Model Number:

RD24-4S

Maximum Mounting Height:

Technology:

Microwave Doppler Radar

Transmitter Frequency:

24.125GHz

Transmitter Radiated Power:

<20 DBm EIRP

Transmitter Power Density:

≤5mW/cm

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

Minimum Order Quantity:

100

Price:

4-6 USD according to order quantity

Packaging Details:

Carton

Delivery Time:

5-8 working dag

Payment Terms:

T/T,paypal,alipay,Western Union

Supply Ability:

5000 pcs per month

Highlight:

24.125GHz Doppler detector

microwave motion sensor with planar antenna

temperature resistant motion detector

Product Description

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity 0

Doppler Detector 24.125GHz | Planar Antenna | Temperature Resistant | Sensitivity 1

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
Flexible angle adjustment: 0°~90° vertical / -30°~+30° lateral tilt
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 (WHD)	120mm80mm50mm
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
Detection distance is too close	Low sensitivity; microwave module angle <45°; sensor blocked	Adjust sensitivity potentiometer to 1/2 or higher; set module angle to ≥45°; remove occluding objects

Application Scenarios

The RD24-4S is a multi-scenario motion detection sensor with high adaptability, primarily applicable to:

Automatic Door Systems: Sliding doors, swing doors, glass induction doors (commercial buildings, shopping malls, office buildings)
Security & Monitoring: Perimeter security detection, indoor human motion induction (residential, factory, warehouse)
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 Sensor 24.125GHz Radar Sensor Automatic Door Motion Detector Wide Field Detection Sensor IP54 Motion Sensor

Tags: