Shenzhen Merrytek Technology Co., Ltd.
                                                                                                           
Verified Supplier
Years
Since
Menu

24GHz Occupancy detector with NO contact and NC contact with AC input

Price Negotiable
Price: Negotiation
MOQ: 100PCS
Delivery Time: 1, Sample and small order: Within 5 working days after receiving your payment. 2, Bulk order: 3-4 weeks after receiving deposit.
Brand: Merrytek
Product Description
24GHz Occupancy Detector with NO Contact and NC Contact with AC Input

This embedded dry contact occupancy detector utilizes 24GHz millimeter-wave radar technology to detect movement, slight motion, and breathing signals, enabling accurate human presence detection while distinguishing between human and non-human targets.

Key Features
  • Advanced life-being detection technology capable of identifying movement, slight movement, and breathing signals
  • Reed tube relay design ensures silent operation, ideal for hotel applications
  • Compact installation size suitable for smart buildings, intelligent hotels, smart offices, and presence detection systems
  • 24-24.25GHz (ISM band) millimeter wave radar with no interference to 5G WiFi and no penetration through solid walls
Technical Parameters
Parameter CategoryParameterSpecification
Input/OutputVoltage Range220-240V AC 50HZ
Rated Voltage220V AC
Working Current50mA max
Working Power≤1W
Sensor ParametersWorking Frequency24GHz -24.25GHz, ISM band
Transmitting Power5mW Max. 3dBm Max.
Detection Area100% / 75% / 50% / 25% (set by remote control MH10 or DIP Switches)
Hold Time5s/30s/1min/3min/5min/10min/20min (set by Remote) or 5s/30s/1min/3min/5min (set by DIPs)
Daylight Sensor50Lux/Disable (set by DIPs) or 5Lux/15Lux/30Lux/50Lux/100Lux/150Lux/Disable (set by remote control MH10)
Detecting Range (100% detection area, radius)Movement: 4-5m (at 3m height)
Minor Movement: 4-5m (at 3m height)
Presence: 3-4m (at 3m height)
EnvironmentWorking Temperature0℃...+50℃
Storage Temperature-40℃...80℃ Humidity:≤85% (non condensing)
IP RatingIP20
Certificate StandardCertificateFCC/RED
Environmental RequirementRoHS
Detection Functions
Occupancy detector signal activation diagram showing movement, slight motion and breathing signal detection

The sensor detects human walking, slight motion (such as body movement, turning the head, and other minor movements), and breathing to enable detection of human presence in non-sleep states.

  • Movement signal: Large movements that trigger sensor activation within the detection area
  • Slight motion signal: Very small movements including leaning forward, leaning back, body swinging, head shaking, typing, and mobile phone usage
  • Breathing signal: Detection of breathing patterns through abdominal and chest cavity dilation
Dimensions (unit: mm)
Occupancy detector dimensional diagram with measurements in millimeters
Wiring Diagram
Internal Structure
Internal structure diagram of occupancy detector components
Installation Instructions
Flush Mounting
Flush mounting installation steps for ceiling installation
  1. Cut a 55mm hole in the ceiling
  2. Remove the crimping cover using a flat-head screwdriver
  3. Connect the wire to the terminal
  4. Install the wire cover and press the wire securely
  5. Bend the spring clamp backward to push into the pre-opened ceiling hole
  6. Ensure stable and reliable installation
Surface Mounting
Surface mounting installation steps for wall or surface installation
  1. Cut off the reserved thin wall for the thread
  2. Fix the product on the target mounting surface with matching screws
  3. Connect the input wire to the wiring terminal and close the cover tightly
  4. Remove the top cover with a flat-blade screwdriver
  5. Adjust the DIP switches and parameters, then replace the top cover
  6. Push the product into the ceiling seat until the buckle fastens securely
  7. To remove, insert a flat-blade screwdriver into the disassembly gap and pry downward
  8. Ensure stability and reliability after installation
Detection Pattern
Detection pattern diagram showing sensor coverage area and range
Important Notes:
  • Detection range varies based on person size, material, covering thickness, and environmental factors
  • Millimeter wave signals can penetrate non-metallic materials like glass and thin walls, but cannot penetrate thick load-bearing walls or metal doors
Remote Control Settings
Remote control settings interface and button functions

Remote control settings support sensitivity adjustment, delay configuration, ON/OFF control, reset functions, sensor motion settings, and indicator light switching.

Initialization Process

Upon first power-up, the sensor enters self-test mode for 20 seconds before transitioning to normal operation. During initialization, external motion signals are not detected and remote control signals are not received.

Factory Default Settings
  • Detection Area: 100%
  • Hold Time: 1 minute
  • Daylight Sensor: Disabled
  • Indicator Light: Enabled
DIP Switch Settings
Detection Area Settings
Switch 1Switch 2Detection Area
ONON100%
-ON75%
ON-50%
--25%
Hold Time Settings
Switch 3Switch 4Switch 5Hold Time
ONONON5 Seconds
-ONON30 Seconds
ON-ON1 Minute
ONON-3 Minutes
---5 Minutes
Daylight Sensor Settings
Switch 6Light Level
ON50 Lux
-Disable

When set to "disable", the lamp will switch on when motion is detected, regardless of ambient light level.

Application Guidelines
  • Installation should be performed by a qualified electrician
  • Keep away from large metal plates, glass, and high-density materials to prevent false triggering
  • Avoid installation near high-current circuits that may affect product operation
  • When installing multiple units, ensure antenna surfaces are parallel and spaced more than 1m apart
  • Avoid facing antenna surfaces toward AC drive power supplies and high-power devices
  • Avoid long-term vibrating objects near the product
  • Prevent unnecessary light from illuminating the illuminance sensor detection window
  • Select appropriate detection area based on room dimensions:
    • 25% for rooms approximately 2m or less (washrooms, sitting rooms)
    • 50% for rooms approximately 3m (washrooms, hallways, sitting rooms)
    • 75% for rooms approximately 4m (small offices, meeting rooms, libraries)
    • 100% for rooms approximately 5m or more (large offices, meeting rooms, libraries)
  • Detection distance varies based on movement speed, object size, installation height, angle, and environmental factors
  • Product specifications and parameters may be optimized without prior notice

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Merrytek Technology Co., Ltd.
Location 101-1101, Building 17, Dianda Guyuan Industrial Park, Mashantou Community, Matan Street, Guangming District, Shenzhen
Contact Person May

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