Motion sensor

Buyers must prioritize the Detection Technology (PIR, Microwave, or Dual-tech). PIR (Passive Infrared) is ideal for energy saving and indoor use, while Microwave sensors offer higher sensitivity and can detect motion through thin walls. Key metrics include Detection Range (typically 5-12 meters), Detection Angle (110° to 360°), and Adjustable Delay Time. For industrial use, ensure an IP65 or higher rating for dust and water resistance.

To ensure market access and safety, products must hold CE (EMC/LVD) for Europe, FCC for the United States, and RoHS for hazardous substance restriction. If the sensor is integrated into smart home systems, verify Zigbee, Z-Wave, or Matter certification to ensure interoperability. For security-grade sensors, look for EN 50131 (Grade 2 or 3) compliance.

Focus on the False Trigger Rate; high-quality sensors utilize Digital Signal Processing (DSP) to filter out pets or environmental noise. Request MTBF (Mean Time Between Failures) data, which should ideally exceed 50,000 hours. From a cost perspective, sourcing from Made-in-China.com allows for tiered pricing, where orders exceeding 1,000 units can reduce the unit cost by 20-35% compared to retail samples.

For Smart Lighting, choose sensors with a built-in Lux Sensor (Photocell) to prevent daytime activation. For Security Systems, prioritize Anti-masking features and Tamper switches. In HVAC control, high-sensitivity sensors with Occupancy/Vacancy modes are essential to maximize energy efficiency in commercial buildings.

The main risks include Functional Inconsistency and Shipping Damage. Mitigate these by requesting a Pre-Shipment Inspection (PSI) to verify that the Sensitivity and Delay settings match the approved sample. Ensure the supplier uses Anti-static packaging (ESD bags) and reinforced outer cartons to prevent damage to delicate internal circuits during long-haul transit.

Start by asking for a Sample Kit to test compatibility with your local voltage (e.g., 110V vs 230V). Negotiate for OEM/ODM services, such as custom branding on the housing or specialized firmware. Aim for a 30% deposit and 70% balance payment after passing a third-party quality check. For long-term partnerships, request a 1-2 year replacement warranty for defective units.

Be aware of Lithium Battery Regulations if the sensors are wireless; these require UN38.3 certification for air freight. Check the HS Code (typically 8526.92 or 8536.50) to calculate accurate import duties. For large volumes, Sea Freight (FCL/LCL) is most cost-effective, but for urgent stock replenishment, Air Express (DHL/FedEx) is recommended despite higher costs.

Always communicate and conduct transactions through the Secured Payment services provided by Made-in-China.com. Verify the supplier's Audited Supplier report to check their factory scale and production capacity. Avoid direct wire transfers to unknown personal accounts; always use Corporate Bank Accounts verified by the platform to ensure legal recourse in case of disputes.