DFRobot CM65 QR Barcode codes Scanner Module intelligent image recognition for self-service vending subway gate access control

DFRobot Fermion MEMS hydrogen nitrogen oxide NO NO2 H2 Gas Sensor MiCS-2714 Breakout for for Gas leak safety Air detection

DFRobot RS232 D-Sub Connector Expansion Shield for LattePanda V1 with signal power isolation lightning surge protection

DFRobot micro: Maqueen micro:bit Educational Programming Robot Platform Smart car V4.0 support Line patrol ambient light

DFRobot Mini CCS811 Air Quality eCO2 TVOC Sensor Breakout support concentration alarm for Smart home car Air detection purifiers

DFRobot Gravity UART Fiber Optic Transceiver Module 10 km complete electrical isolation lightning protection for star networking