SparkFun ESP8266 Thing Dev BoardFeatures- This is the SparkFun ESP8266 Thing Dev Board – a development board that has been solely designed around the ESP8266, with an integrated FTDI USB-to-Serial chip. The ESP8266 is a cost-effective and very capable WiFi-enabled microcontroller. ..
wearingActiveGard – technology protects you from acoustic shock and sudden sound surgesEPOS Sennheiser HD voice clarity – wideband sound for a natural listening experienceCall control features: Answer/End a call, volume up/down, microphone mute, redial last outgoing callNoise canceling microphone – ..
3V-5V RFID YHY502CG Reader Writer Module UART InterfaceFeatures-Complete Read/Write module with the built-in transceiver antennaAuto checks for the presence of a tagSupports ISO14443A /MIFARE, MIFARE Classic 1k, MIFARE Classic 4kTTL RS232 Interface, baud rate19200bpsFast data transfer ¬Contact-less ..