Features:brand new and high qualityNetworking Protocol: Support network IPv4/IPv6/SSL.TCP/UDP/HTTP/FTP/MQTT.Bluetooth-compatible Protocol: Meet Bluetooth-compatible V4.2BR / EDR and BLE standards.RF: NZIF Receiver Class-1, Class-2 and Class-3 Transmitter AFH, sensitivity is -97dBm.Modular Interface: UART, SPI SDIO, I2C LED PWM, TV, PWM, I2S, IRGPIO, Capacitor for Touch Sensor, ADC, DACLNA, Preamplifier.WiFi Instructions: The WiFi communication distance is up to 300 meters and the transmission power is 22dBm. WiFi supports FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC. Specifications:Material: MetalNetworking Protocol: Support network IPv4/IPv6/SSL.TCP/UDP/HTTP/FTP/MQTTRF: NZIF Receiver Class-1, Class-2 and Class-3 Transmitter AFH, sensitivity is -97dBmChipset: TTGO Micro32Flash: QSPI Flash 4MBExtend Fuction: VGA, PS/2Modular Interface: UART, SPI SDIO, I2C LED PWM, TV, PWM, I2S, IRGPIO, Capacitor for Touch Sensor, ADC, DACLNA, PreamplifierWorking Voltage: 2.7V-3.6VWorking Current: About 30mASleep Current:230uAWorking Temperature Range:-40-85Size: Approx. 67x32 mm/ 2.63x1.26 inches Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Control Module