Features: Voice pickup on one mic: supports a 5m distance in home scenarios. Voice wake-up: low power consumption, support for mandarin with accent, low false wake-up rate. Offline recognition: support local 150 control instruction recognition. Provides standard UART protocols and supports user - owned protocols. Speaker: external speaker up to 802W, 1601W, 403W. Note: Only suitable for Chinese Speaking countries. Specifications: Voice recognition module size: apprpox 27x37mm/1.1x1.5in Relay module size: approx 162x44mm/6.4x1.7in Audio module: DC5V USB input: DC5V Terminal/for DC for seat input: DC7-32V Relay port capacity: 10A/250VAC, 10A/30VDC Package Includes: 1x Speech Recognition Module note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.