Human detection sensor

Buyers should distinguish between PIR (Passive Infrared) and mmWave Radar (24GHz/60GHz) technologies. PIR is cost-effective for simple motion detection (e.g., lighting), but for static presence detection (detecting a person sitting still), mmWave radar is essential as it detects micro-movements like breathing. For high-security or retail analytics, AI-based Vision Sensors offer the highest accuracy but require stricter privacy compliance.

Prioritize sensors with a wide detection angle (110° to 360°) and a configurable detection range (up to 10-15 meters). For integration, ensure compatibility with protocols like Zigbee 3.0, Matter, or Wi-Fi. Look for IP65 or higher ratings if the sensor is intended for outdoor or humid environments to prevent false triggers caused by environmental interference.

For the US market, FCC certification is mandatory for wireless RF devices. For the EU, ensure the product carries the CE mark and complies with the RoHS Directive (Restriction of Hazardous Substances). If the sensor uses a camera, it must strictly adhere to GDPR (General Data Protection Regulation) or CCPA to ensure data privacy and encryption.

Request the supplier to provide Signal-to-Noise Ratio (SNR) data and test reports regarding RFI/EMI interference. High-quality sensors should include adjustable sensitivity settings via software to filter out 'noise' from pets, curtains, or air conditioners. Always request a Golden Sample for field testing before committing to a bulk purchase.

Utilize Third-Party Inspection services (such as SGS or Intertek) to conduct During Production (DUPRO) and Final Random Inspections (FRI). Specifically, verify the IC chipset brand (e.g., Texas Instruments, Silicon Labs) used in the PCBA, as some suppliers may swap high-end chips for cheaper alternatives to save costs.

Focus on Tiered Pricing based on volume and request a breakdown of the BOM (Bill of Materials) for transparency. Negotiate a 30/70 payment term (30% deposit, 70% balance after inspection but before shipment) and ensure all technical requirements are documented in the Sales Contract to provide leverage in case of disputes.

If the sensors include lithium batteries, they are classified as Dangerous Goods (DG). Ensure the supplier provides a valid UN38.3 Test Report and MSDS (Material Safety Data Sheet). Using Air Freight for small batches is fast, but for large volumes, Sea Freight (LCL/FCL) is more economical; however, you must ensure the forwarder is experienced in handling Class 9 hazardous materials.

Always use Secured Payment services provided by Made-in-China.com to ensure funds are only released to the supplier once shipping documents are verified. Avoid direct wire transfers to private bank accounts and always verify the Supplier's Business License and Audit Reports available on the platform to confirm their manufacturing capability.