Note Seeed fusion offers PCB/ PCBA manufacturing service for customized products based on WT8266-S1 FCC&CE&RoHS& Wi-Fi Module based on ESP8266 with an online instant quote and fast delivery. Furthermore, business users can enjoy a free prototype and engineer support as well. Click here to learn more! WT8266-S1 FCC/CE/RoHS/ Wi-Fi Module based on ESP8266 is a low consumption, high performance embedded Wi-Fi network control module designed by Wireless-Tag. It can meet the IoT application requirements in smart power grids, building automation, security and protection, smart home, remote health care etc. Features: Operating Voltage: 3.3V Operating Temperature：-40°C -85°C CPU Tensilica L106 RAM 36KB（Available） Flash 32Mbit System: 802.11 b/g/n IntegratedTensilica L106 ultra-low power 32-bitmicro MCU, with 16 bit compact mode,main frequency support 80 MHz and 160 MHz, support RTOS WIFI 2.4 GHz，supportWPA/WPA2 Ultra-Small 18.6mm*15.0mm Integrated 10 bit high precision ADC Integrated TCP/IP Stack IntegratedTR switch、 balun、 LNA、Power amplifier and matching network Integrated PLL、Regulator and power source management components, +20 dBm output power in 802.11b mode Supports antenna diversity Deep sleep current < 20uA, Power down leakage current < 5uA It can use an application processor SDIO 2.0、SPI、 UART Polymerization of STBC、 1x1 MIMO、 2x1 MIMO A-MPDU 、A-MSDU and 0.4 sguard interval Wake up within 2ms, connect and transfer data packets Standby power consumption < 1.0mW (DTIM3) Support AT remote upgrades and cloud OTA upgrade Support STA/AP/STA+AP operation modes Feature summary: Distance 280meters--3 Bars, 350meters no prolem. Up to 400 meters Industrial temp grade CE, FCC, RoHs compliance AT command Transparent transmission Ultra-low power consumption