Specification:
CP2102 ESP8266 ESP-12E Development Board:
802.11 b/g/n protocol
Wi-Fi Direct (P2P), soft-AP
Integrated TCP/IP protocol stack
Integrated TR switch, balun, LNA, power amplifier and matching network
Integrated PLL, regulators, and power management units
+19.5dBm output power in 802.11b mode
Integrated temperature sensor
Supports antenna diversity
Power down leakage current of less than 10uA
Integrated low power 32-bit CPU could be used as application processor
SDIO 2.0, SPI, UART
STBC, 1x1 MIMO, 2x1 MIMO
A-MPDU & A-MSDU aggregation & 0.4 s guard interval
Wake up and transmit packets in less than 2ms
Standby power consumption of less than 1.0mW (DTIM3)

0.96 OLED display:
Resolution: 128X64
Number of pins: 4pin
Supported platforms: for Arduino, ESP series, 51 series, MSP430 series, STIM32 / 2, SCR chips
Power consumption: normal display power consumption is 21mA-28MAX
Working current: The current is about 20ma during normal operation, and the current is at the ua level during sleep.
Viewing angle: full viewing angle
Working temperature: -20°C~70C
Storage temperature: -30°~80°C
Working voltage: 5V/3.3V
Size: 0.96in
Driver IC: SSD1306
Communication: IIC
VCC: 3.3~5V
GND: Ground
SCL: Serial Clock
SDA: Serial Data

Temperature and Humidity Sensor:
Accuracy: +/-5% RH,
Temperature measurement range: 0~50°C,
Temperature measurement accuracy: +/-2°C
Digital signal output
VCC: 3.3V~5V
GND: Ground
DATA: MCU IO port
Tips: Do not reverse the VCC and GND, otherwise it will burn!

Package includes:
1 x ESP8266 ESP-12E Development Board
1 x 0.96in OLED display
1 x Temperature and Humidity Sensor
1 x Jumper Wire
1 x Mirco USB cable
1 x Breadboard