| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20.5 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Integrated Trace | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 20-SMD Module | ESP8266EX | Flash RAM | 2 MB | 50 kB | ADC GPIO I2C PWM SDIO SPI UART | 50 mA | 56 mA | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Integrated Trace | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | Flash RAM | 2 MB | 50 kB | ADC GPIO I2C I2S PWM SPI UART | 50 mA | 56 mA | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20 dBm | 72.2 Mbps | 3.6 V | 2.7 V | PCB Trace | 64QAM BPSK CCK DSSS OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | | | 50 kB | GPIO I2C I2S PWM SPI UART | 50 mA | 56 mA | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20.5 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Integrated Trace | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | Flash RAM | 2 MB | 50 kB | GPIO I2C I2S PWM UART | | | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20.5 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Integrated Trace | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | Flash RAM | 4 MB | 50 kB | ADC GPIO I2C I2S PWM SPI UART | 50 mA | 56 mA | 50 kB | 50 kB |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Integrated Trace | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | Flash RAM | 2 MB | 50 kB | ADC GPIO I2C I2S PWM SPI UART | 50 mA | 56 mA | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20.5 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Antenna Not Included U.FL | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | Flash RAM | 4 MB | 50 kB | ADC GPIO I2C I2S PWM SPI UART | 50 mA | 56 mA | 50 kB | 50 kB |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20 dBm | 72.2 Mbps | 3.6 V | 2.7 V | PCB Trace | 64QAM BPSK CCK DSSS OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | | | 50 kB | GPIO I2C I2S PWM SPI UART | 50 mA | 56 mA | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Integrated Trace | | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | | | | | | | | | |
| WiFi | 802.11b 802.11g 802.11n | -98 dBm | 20.5 dBm | 72.2 Mbps | 3.6 V | 2.7 V | Antenna Not Included U.FL | 64-QAM BPSK CCK OFDM | -40 °C | 85 °C | 120 mA | 170 mA | Surface Mount | 2.5 GHz | 2.4 GHz | 18-SMD Module | ESP8266EX | Flash RAM | 2 MB | 50 kB | GPIO I2C I2S PWM UART | | | | |