1. 802.11b/g 2. Built-in 10bit high-precision ADC 3. Built-in TCP/IP protocol cable 4. Built-in switch, balun, LNA, power amplifier and matching network 5. Built-in PLL, voltage regulator and power management components,+20dBm output power in 802.11b mode 6. Aggregation of A-MPDU and A-MSDU and protection interval of 0.4s 7. WiFi@2.4GHz , support WPAWPA2 security mode 8. Support AT remote upgrade and cloud OTA upgrade 9. Support STAAP/STA+AP working mode 10. Support Smart Config function (including Android and ios devices) 11,HSPI,UART,I2C,I2S,IR Remote Control,PWM,GPIO 12. The holding current of deep sleep is 10uA, and the turn-off current is less than 5uA 13. Wake up, connect and transfer data packets within 2ms 14. Power consumption in standby mode is less than 1.0mW (DTIM3) 15. Operating temperature range: - 40 C~125 C 16. Built-in Tensilica L106 ultra-low power 32-bit micro-type MCU, main frequency support 80MHz and 160MHz support RTOS 17. Product size: 57x30mm Colour:black Material:PCB+metal Package Contents: 1 x ESP8266 CP2102 development board 1 x USB to serial port module (CH340) 1 x micro-type data cable 1 x Bread board 1 x 65 jumper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.