1、1.14 Inch LCD Screen: This development board module uses a 1.14 inch LCD screen, which clearly displays all kinds of information and provides an excellent visual experience, suitable for doing a variety of screen display projects. 2、Custom Function Keys: This WiFi Bluetooth development board has two custom function keys that can be custom programmed according to your needs, increasing the convenience of use. 3、Powerful Functions: This development board supports WiFi and Bluetooth functions to meet a variety of wireless communication needs, making the device more interactive and practical. WiFi working band is 2.4GHz to 2.5GHz, which can provide stable wireless communication services. 4、Safe And Reliable: This development board replacement adopts WPA, WPA2, WPS encryption to ensure the secure transmission of data, you do not need to worry about the loss or leakage of information. 5、Convenient Upgrade: This 1.14in LCD development board adopts UART and OTA dual mode upgrade, which makes it more convenient to upgrade the device. At the same time, the device supports external power supply to provide long uninterrupted power supply for wireless devices. Item Type: Development Board Material: PCB Screen: 1.14 Inch LCD Custom Function Keys: 2 Operating Current: 67mA Sleep Current: 350uA External Power Supply: Support (Type C) WiFi & BT Function: Support WiFi Operating Frequency Band: 2.4GHz-2.5GHz WiFi Encryption Method: WPA, WPA2, WPS Firmware Upgrade Method: UART, OTA 1 x Development Board 2 x Pins 1 x Adapter Cable 1 x Manual