Mini Time of Flight Ranging Sensor High Precision Narrow Beam Laser Distance Measurement Occupancy Module

Overview & Technological Foundation

This industrial-grade presence detection device utilizes advanced millimeter-wave radar technology to overcome the traditional limitations of passive infrared (PIR) detectors. While standard PIR sensors only register macro-movements and frequently fail when occupants remain stationary, this continuous-wave radar architecture continuously analyzes micro-Doppler frequency shifts. This allows the sensor to detect subtle physical micro-vibrations, including chest wall movements during respiration and minor postural adjustments, ensuring accurate real-time presence awareness.

Core Functional Capabilities & Technical Specifications

• Static Presence Detection: Reliably maintains occupancy states when individuals are sitting motionless, working at a desk, reading, or sleeping.

• Non-Contact Respiratory Monitoring: Detects breathing patterns and subtle physiological frequencies without requiring physical body contact or wearable devices.

• Wide Spatial Coverage: Engineered with optimized antenna beamwidth patterns to provide balanced, comprehensive angular detection across indoor spaces.

• Privacy-Preserving Operation: Operates entirely without optical lenses or video cameras, preserving visual privacy in private rooms, restrooms, and care facilities.

Comprehensive Installation & Mounting Guidelines

• Mounting Positions: Supports both ceiling-mount and side-wall surface mounting depending on target coverage requirements.

• Ceiling Mount: Ideal for full-room top-down presence detection and center-room coverage. Recommended installation height is between 2.5 meters to 3.0 meters above floor level.

• Wall Mount: Suitable for targeted micro-motion, bed monitoring, or directional coverage across specific seating areas. Recommended height is 1.5 meters to 2.0 meters above floor level facing the primary activity zone.

• Environmental Clearance: Install away from large metallic obstacles, heavy metal enclosures, or moving mechanical equipment (such as electric ceiling fans, large metallic ductwork, or air conditioning vents) that could disrupt radar wave reflections.

• Wiring & Integration: Connects via standard multi-pin terminal ports or low-voltage power leads. Ensure a stable DC power supply to maintain consistent radar transmission and prevent signal ripple.

Versatile Application & Deployment Scenarios

• Elderly Care & Residential Safety: Installed above beds or seating areas to track continuous breathing micro-movements, sleeping states, and prolonged immobility without invasive camera surveillance.

• Smart Home & Energy Management: Automatically controls HVAC systems, ambient lighting, and automated curtains based on true static occupancy, avoiding unexpected light shutoffs when reading or sitting quietly.

• Hospitality & Hotel Rooms: Placed in guest rooms to maintain room power and environmental controls while guests are sleeping or working at desks, eliminating reliance on keycard-slot switches.

• Office & Meeting Room Automation: Integrated into commercial building management systems to optimize conference room scheduling and smart lighting based on real-time desk and chair occupancy.

FAQs 

Q: How does millimeter-wave radar detect human presence when a person is sitting completely still?

A: The sensor emits continuous low-power radio waves and measures phase and frequency variations in the reflected signal. It is sensitive enough to pick up microscopic surface movements—such as chest movements from breathing—allowing it to confirm continuous human presence even without macro body motion.

Q: Does this sensor require a clear line of sight, and can it pass through walls?

A: Millimeter-wave radar signals pass easily through non-metallic, low-density materials like thin plastic housing, glass panels, and lightweight drywall. However, performance depends on proper sensitivity calibration to avoid detecting motion through thin room partitions.

Q: What is the main advantage of wall mounting versus ceiling mounting?

A: Ceiling mounting provides a broad 360-degree top-down presence zone over an entire room, making it optimal for general lighting automation. Wall mounting directs the radar beam horizontally, which is better suited for headboard breathing detection, desk area monitoring, and directional entry tracking.

Q: Can moving curtains or air conditioners trigger false presence detections?

A: Because high-frequency radar detects physical displacement, high-volume airflow blowing directly against curtains, plants, or metal fan blades can produce radar reflections. Proper positioning away from direct air vents and adjusting radar sensitivity thresholds minimizes these false triggers.

Q1. Can I request samples of waterproof aluminum enclosures before bulk ordering?
A: Absolutely. We encourage sample orders for quality validation and even accept mixed samples. While standard samples are provided free of charge for qualified clients, custom samples may incur a nominal fee that will be credited toward future orders.

Q2. What is your production lead time?
A: Our streamlined process ensures:

• Samples: 3-5 working days (expedited service available)

• Mass production: 1-2 weeks for orders exceeding 1,000 units
  Note: Lead times may vary for complex customization projects.

  
  

  
  

  
  

Q3. Is there a minimum order quantity (MOQ) for waterproof enclosures?
A: We prioritize flexibility for our partners:

• Sampling: MOQ 1 unit for quality verification

• Bulk orders: Competitive MOQ starting at 10 units, with tiered pricing for volume orders

• Customized orders: If you need to customize the size, color, logo, or other surfaces, the minimum order quantity is 100 pieces

Q4. What shipping methods do you offer for international orders?
A: We provide end-to-end logistics solutions:

• Express: DHL/UPS/FedEx (3-5 days, door-to-door tracking)

• Air freight: 5-7 days for urgent bulk shipments

• Sea freight: Economical option for full-container loads (FCL)
  Customs clearance support included for all shipments.

Q5. What is the standard ordering process?
A: Our 5-step streamlined workflow:

1. Technical consultation (application scenarios/IP rating requirements)

2. DFM analysis & formal quotation

3. Sample approval & 30% deposit payment

4. Production with weekly progress reports

5. Final inspection & balance payment

Q6. Can you apply custom branding to the products?
A: Yes, we offer value-added OEM services:

• Logo engraving/pad printing (provide vector files in .ai/.eps format)

• Custom packaging solutions
  Design proof must be approved 72hrs before production commencement.

Q7. What quality assurance do you provide?
A: Our commitment includes:

• Product warranty: 2-year limited warranty (extendable)

• Certifications: IP68/IP69K compliant, RoHS & REACH certified

• Testing reports: Third-party lab reports available upon request

Q8. How are quality issues handled?
A: Our zero-defect protocol ensures:

1. Prevention: ISO 9001:2015 certified production with automated optical inspection

2. Resolution:

• Single-unit defects: Replacement within 48hrs (NCR report provided)

• Batch issues: Full root-cause analysis + 3 resolution proposals within 72hrs

• Critical defects: On-site technical support available

Need More Details?
Contact our sales team at [Sales@bsumwell.com] for project-specific consultation.