This Grove Kit is specially organized for Grove speech recognizer, the first speech recognition grove module. If you are interested in building voice control application with Grove speech recognizer but don?t know how to start, this is the perfect kit for you. With this starter kit, you are able to build different multimedia smart-home devices that can let your voice control the light to turn on/off, ask the MP3 to play music, ask what time it is now or even turn on your TV.Part List1x Grove - Speech Recognizerto recognize 22 certain speech commands1x Grove - MP3 v2.0to play music or different sound files1x Grove - RTC to record the current time for your smart device, especially in those situations where time is crucial for an event.1x Base Shield to use more Grove modules simultaneously and essily.1x Grove - Infrared Receiverto detect infrared light1x Grove - Infrared Emitterto emit infrared light which can be a signal for a control system5x Cable1x Manual to make a brief introduction for all the modules included in this kit.