5-20PCS DC 3.7V-5V AI Offline Voice Switches Control Board Sound Control Circuit Driver Board Tools for Single Color Night Light

High-concerned chemical : None Model Number : DC 3.7V-5V AI Offline Voice Switches Control Board Type : Tools Parts Origin : Mainland China Origin : Mainland China Input voltage : DC 3.7-5V Output voltage : Output voltage is equal to input voltage, can control 5W LED lamp Device distance : about 5 meters in a quiet indoor environment Response time : fastest 0.1s Control method : no wake-up word, direct command word control Language type : English version, Chinese (Mandarin) Recognition type : offline local recognition, no Internet connection required Working environment : -20~50 Material : ABS Voice Switches Control Board : Sound Control Circuit Driver Board ON/OFF and Brightness Control : Voice Sound Chip Module