1、Ultra small volume, high quality electronic components, stable and reliable performance. 2、Serial port to WiFi. Wireless passthrough. 3、Long distance ultra-low power consumption. 4、High temperature resistant, as high as 125 ℃. 5、Built-in cache memory improves system performance and optimizes the storage system. Features: Ultra small volume, high quality electronic components, stable and reliable performance. Serial port to WiFi. Wireless passthrough. Long distance ultra-low power consumption. High temperature resistant, as high as 125 ℃. Built-in cache memory improves system performance and optimizes the storage system. Fully compatible with ESP8266, source code can be used in intact transplantation. Specification: Condition: 100% brand new Operating temperature range: - 40 ℃ to 125 ℃ Size: 12.3 * 20cm / 4.8 * 7.9in SOC features: Built-in Tensilica L106 ultralow power consumption 32-bit microprocessor, core frequency supports 80MHz and 160MHz, and supports RTOS; Built-in TCP/IP stack; Built-in 1-channel 10-bit high-precision ADC; Peripheral interfaces HSPI, UART, I2C, I2S, IR Remote Control, PWM, GPIO; The maintenance current of deep sleep was 10uA, and the turn-off current was less than 5uA. Wake up, connect and deliver data packets within 2 ms; Standby power consumption is less than 1.0mw (DTIM3); Built-in 1M byte SPI Flash. Wi-Fi features: Support 802.11 b/g/n/e/I; Support Station, SoftAP, SoftAP+STA mode; Support Wi-Fi Direct (P2P); Support CCMP(CBC-MAC, counter mode), TKIP(MIC, RC4), WAPI(SMS4), WEP(RC4), CRC hardware acceleration; P2P discovery, P2P GO mode /GC mode and P2P power management; WPA/PA2 PSK and WPS; 802.11 i security features: pre-authentication and TSN; Support 802.11n (2.4GHz); 802.1 h/RFC1042 frame encapsulation; Seamless roaming support; Support AT remote upgrade and OTA upgrade in Cloud; Smart Config support (including Android and iOS devices); Module peripheral interface: 2 x UART 1 x ADC 1 x En 1x Wake Up Pin 1 x HSPI 1 x I2C 1 x I2S 10 x GPIOs (Max.) Package List: 1 x WiFi Control Module