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PN532 NFC RFID Read Write Module V3 KitFeatures-Support II2, SPI, and HSU (High-Speed UART)I2C / UART: 3.3V ~ 24V TTLSPI: 3.3V TTL with 100-ohm resistors in seriesCommunication distance: 5cm~7cmOn-board level shifter, Standard 5V TTL for I2C and UART, 3.3V TTL SPIWork in NFC Mode or RFID reader/writ..

Ai Thinker A9G GPRS Series ModuleFeatures-Complete quad-band GSM / GPRS module, 850/900/1800 / 1900MHzSMD package for easy MP & testingWorking temperature -30 ° C +80 ° C;GPRS Class 10Sensitivity <-105GPIO level is 2.8V..

ESP8266/ ESP-12F Module/ Serial WIFI Witty Cloud Development Board + MINI nodeMCUFeatures-LDR Light Sensor on boardWS2812 Led on board3x tactile buttons (1x in the Witty board and 2x in theCH340 board)Micro USB connection for power and/or programmingUses latest ESP-12F module with 4M flash and integ..

74-0495-01 Cisco Terminal convertor Db9 to Rj45 Console AdapterGeneral Warranty 30 days Part Number 74-0495-01 Model Db9..