YJJ MC420S-G Microwave Induction Module 5V Doppler Motion Sensor Smart Control Access Control

Product Description:

YJJ MC420S-G Microwave Induction Module 5V Doppler Motion Sensor Smart Control Access Control

Features:

Complete Parameter Description of MC420S (10.525GHz) Microwave Doppler Sensing Module
I. Basic Product Overview
MC420S-G is an X-band Doppler microwave radar sensing module that detects moving humans and objects using the Doppler effect. The metal shielding shell is anti-interference and is suitable for various motion sensing industrial control, lighting, and security equipment. The picture version is the standard PCB soldering plate version, with the model marked as 10.525GHz MC420S-G.
II. RF Core Electrical Parameters Table
Parameter Item Standard Specification
Center Transmit Frequency 10.525GHz (ISM Unlicensed Frequency Band)
Frequency Precision Error ±5MHz
Transmit EIRP Power Minimum 13dBm, Typical 15dBm, Upper Limit 20dBm
Harmonic Radiation < -10dBm, Low Interference, Compliant for Export
Antenna Gain 8dBi
Startup Response Time 3μs Ultra-fast Power-On Start
Noise Floor 5μVrms, Excellent Signal-to-Noise Ratio
Receiving Sensitivity With bandwidth 3~80Hz and Signal-to-Noise Ratio 10dB, -86dBm
Noise Floor of Interference (3~80Hz) 8μV
Power Supply Current (DC 5V Supply)
Continuous CW Continuous Transmission Mode: Maximum 32~33mA
Intermittent Pulse Power-saving Mode (2kHz, Duty Cycle 2%): Typical 1.2~1.8mA, Suitable for Battery-Limited Devices
Standard Power Supply Voltage
5V DC ±0.25V (4.75V~5.25V), Strictly Prohibit Over-Pressure Supply
III. Antenna Radiation Angle (3dB Beam Angle)
Horizontal Plane (Left and Right): 85°
Vertical Plane (Up and Down): 42°
Minimum Detectable Moving Speed: Longitudinal 5cm/s, Stable Recognition for Slow Movement
Conventional Human Sensing Distance: Open-Air Environment 5~12m, Reflection of Metal and Walls can Extend the Detection Range, Obstructions will Shorten the Distance
IV. Mechanical Dimensions and Structure
Overall Size: 46.7mm × 40mm × 7.8mm (Length × Width × Thickness)
Structure: Metal Fully Shielded Cover, Yellow PCB Board-mounted Solder Holes, Four Circular Solder Pads Reserved on Both Sides for Soldering and Fixation
Weight: Approximately 12g
Soldering Version: G0325, REV:B10, 33R + 33R Matching Board-mounted Resistors, Standard Mass Production Version
Identification: Front Panel with TESTED PASSED Factory Inspection Label, Full Inspection for Shipment
V. Pin Definitions (4Pin Solder Pads) Table
Pin Number Definition Function Description
Pin 1 +5V VCC Positive power supply terminal. 4.75~5.25V DC power supply.
Pin 2 IF OUT Intermediate frequency analog signal output. Amplification and judgment are done by the post-stage amplifier / microcontroller.
Pin 3 GND Negative power supply terminal and signal ground.
Pin 4 GND Common ground. Enhances grounding stability and anti-interference.
Six. Environmental Adaptation Parameters
Operating Temperature: Standard - 15℃ ~ +55℃; Limit Tolerance - 20℃~+60℃
Storage Temperature: -30℃~+70℃
Humidity Resistance: Can work stably in regular humid environments. Does not support long-term immersion in water.
Anti-interference: Medium resonant oscillator + balanced mixer circuit. Strong anti-interference against light, motor, and power frequency; Excellent anti-static performance.
Seven. Working Principle
The module emits 10.525GHz microwaves. When encountering moving objects, the reflected waves are returned. Movement causes frequency deviation. The module outputs IF intermediate frequency analog voltage. The post-stage circuit collects the waveform to determine if there is movement. It is not affected by light, smoke, or curtains. The infrared cannot penetrate such scenarios, and the microwaves can work normally.
Eight. Main Application Scenarios (Compatible with Export Listing)
1. Lighting Intelligent Control
Human body sensing corridor lights, garage sensing lights, corridor sensing switch, courtyard solar sensing lights, automatic triggering of advertising board lights
2. Automatic Doors & Entrance Equipment
Commercial sliding automatic doors, glass sensing doors, revolving doors, garage door human proximity sensing opening
3. Security Alarm Equipment
Infrared microwave dual detection anti-theft detector, indoor intrusion alarm, warehouse security, ATM protection sensing
4. Industrial & Commercial Equipment
Flow line motion detection, automatic vending machine human sensing, high-pressure cleaning machine start-stop, ventilation fan human linkage
5. Smart Home & Small Appliances
Bathroom air heating, exhaust fan human sensing, wardrobe sensing lights, cabinet sensing lighting, medical equipment proximity awakening
6. Traffic Speed Assistance
Simple vehicle movement detection, gate vehicle sensing trigger

Specifications: