Nodemcu backplane WIFI development board ESP8266 serial portIt is suitable for WiFi Development BoardIt allows developers to deal with the underlying hardware in a similar way for .This base is equipped with a DC-DC (wide input range) switch plate and a standard 5.5 x 2.1mm plug, numerous mounting holes and headers are available for EASE Nodemcu V3 module use.High- products, exquisite design modules, cheap, durable and not easy to damage short circuits.Product name: nodemcu backplaneModel: V3Development board base: ESP8266WIFICompatible with: v3 backplanePower indicator: YesSwitching power supply: 5V/1VProduct size: 60 x 59.8 x 1.8mmcolor:BlackMaterial:PCBPackage Contents:1 x nodemcu backplaneOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.