How much is a radar sensor? Prices vary widely because radar sensors differ in frequency, range, accuracy, housing, and intended use. A basic 24 GHz radar module for DIY projects may cost $10 to $50. A 60 GHz or 77 GHz automotive radar sensor can range from $100 to $800, while premium long-range units for advanced driver assistance systems may exceed $1,500. Industrial radar level sensors often cost $300 to $2,000, depending on accuracy, material, and certifications. Consumer motion detectors using radar, such as smart home presence sensors, usually sell for $20 to $120.

Several factors affect the final price. Frequency band matters: 24 GHz is common and affordable, while 77 GHz offers higher resolution and costs more. Detection range, field of view, and update rate also influence cost. Rugged housings for outdoor or factory use add expense. Communication interfaces like CAN, Ethernet, UART, or IO-Link can raise the price. Certifications for automotive, safety, or hazardous environments increase testing and compliance costs. Brand, warranty, and minimum order quantity also play a role.

For buyers, the cheapest option is not always best. A low-cost radar sensor may have limited range, poor interference resistance, or no software support. Automotive and industrial users should prioritize reliability, temperature range, and lifecycle availability. Prototype buyers can start with evaluation kits, which often cost $50 to $300. The right price depends on performance, environment, and volume.