SPECIFICATION:

• MEASURES 2.0" X 0.9" X 0.28" (51MM X 23MM X 8MM) WITHOUT HEADERS SOLDERED IN 
• WEIGHT: 9.7g
• ESP8266 AT 80MHz WITH 3.3V LOGIC/POWER
• 4MB OF FLASH (32 MBIT)
• BUILT IN WIFI 802.11 b/g/n
• 3.3V REGULATOR WITH 500mA PEAK CURRENT OUTPUT
• CP2104 USB-SERIAL CONVERTER ONBOARD WIHT 921600 MAX BAUDRATE FOR SPEEDY UPLOADING
• AUTO-RESET SUPPORT FOR GETTING INTO BOOTLOAD MODE BEFORE FIRMWARE UPLOAD
• 9 X GPIO PINS - CAN ALSO BE USED AS I2C AND SPI
• 1 X ANALOG INPUTS 1.0V MAX
• BUILT IN 100mA LiPOLY CHARGE WITH CHARING STATUS INDICATOR LED, CAN ALSO CUT A TRACE TO DISABLE THE CHARGER
• PIN #0 RED LED FOR GENERAL PURPOSE BLINKING. PIN #2 BLUE LED FOR BOOTLOAD DEBUG & GENERAL PURPOSE BLINKING
• POWER/ENABLE PIN
• 4 MOUNTING HOLES
• RESET BUTTON