The Hi-Link HLK-LD1041 is a compact X-band Doppler radar motion-sensing module operating at 10.525 GHz, designed primarily for embedded motion detection and smart-lighting applications. Key Specifications • Brand: Hi-Link • Model: HLK-LD1041 • Radar Frequency: 10.525 GHz • Technology: X-Band Doppler Radar • Detection: Motion / micro-motion • Detection Angle: 110° ±10° • Sensing Range: Approximately 3–5 m, depending on installation • Supply Voltage: 5–12 V DC according to the manufacturer datasheet • Output Voltage: 3.3 V typ. • Power-On Stabilization: Approximately 7–9 seconds • Operating Temperature: −20°C to +70°C • Antenna: Integrated 1T1R transmitting/receiving antenna • Mounting: Suitable for concealed/embedded and ceiling installations Applications • Smart lighting and automatic lamps • Ceiling lights and downlights • Home & office automation • Motion-activated devices • Security and presence detection • Embedded IoT sensing systems • Pet-related smart devices