Features: Offline Voice Recognition:This smart module supports voice commands without internet connection, making it ideal for standalone applications in smart homes and automation systems. Customizable Vocabulary:Users can define specific words or phrases to improve recognition accuracy and flexibility for various projects and needs. Compact & Easy Integration:With a small size, this module fit seamlessly into devices like robots and home automation systems without occupying much space. High Accuracy Algorithm :Advanced voice recognition technology ensures fast and precise command interpretation for reliability performances in diverse environment. Wide Compatibility:Works at DC3.3V and features Type C interfaces, enabling smooth integration with microcontrollers and development boards for professional use. Specifications: Component: PCB, metal Size:Approx.36x36mm/1.42x1.42inch Communication interfaces: Type C Power supply : DC3.3V Option Type:1pc Voice Recognition Module(Soldered),1pc Voice Recognition Module& 1pc Pin Header; Applicable scenarios:Smart home,Robot,Automation systems; Package Includes: Package A 1pc Voice Recognition Module(Soldered) Package B 1pc Voice Recognition Module 1pc Pin Header note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.