TS-M1020D is an 8*12mm ultra-small size Bluetooth low power ultra-low cost Bluetooth module, the module is a Bluetooth 5.2 chip, integrated BLE+SPP dual Bluetooth protocol, with excellent stability and compatibility. Module default Bluetooth serial port transparent transmission, the user can change the serial port baud rate, device name and other parameters according to the provided AT instructions, flexible operation and simple use. Suitable for various development projects of customers. Model No.: TS-M1020D Features Bluetooth Version: BLE 4.2+SPP 3.0 Frequency Band: 2.402GHz-2.480GHz ISM band TX Power: -20dBm~+4dBm Receive Sensitivity: -95dBm Air Rate: 250Kbps/1Mbps/2Mbps Antenna: Ceramic Antenna Advise Range: 80m Memory: 256KB FLASH+128KB RAM Size: 12*8*1.5mm Pin/GPIO: 12/7 Power Supply: 3.1~4.35V Operating Temperature: -20 ~+85 Peripheral Interface: UART/SPI/I2C/ADC Serial Transparent Transmission Rate: BLE 4KB/s, SPP 16KB/s Applications Smart home Location tracking Intelligent educational equipment Measurement and monitoring system Industrial sensors and controls Medical equipment monitoring and wireless control