Speed Recognition, Voice Recognition Module V3.1Voltage: 4.4 -5.5 VCurrent:?40 mADigital Port: UART Port and GPIO 5V TTL LevelSimulate Port: 3.5mm mono microphone connector and microphone pin interfaceSize: 31 mm x 50 mmRecognition accuracy: 99% (in an ideal environment)Supports up to 80 voice commands, 1500ms per voice (one or two words)Up to 7 voice commands are valid at the same timeProvide for Arduino libraryEasy to control: UART/GPIOUser controlled general purpose pinout
