The module uses a standard 2x4 pin header with a 2.54mm pitch. The pins are defined as follows: Description Ground connection Power supply (1.8V – 3.6V DC) General Purpose Digital I/O pin 0 SPI Chip Select (Active Low) SPI Master Output Slave Input MISO / GDO1 SPI Master Input Slave Output / GDO1 General Purpose Digital I/O pin 2 Key Technical Specifications Operating Frequency: 387MHz to 464MHz (Default: 433MHz). Supply Voltage: 1.8V to 3.6V. Voltages above 3.6V will permanently damage the module. Communication Interface: 4-wire SPI (CSN, SCK, MOSI, MISO). Transmission Power: Maximum 10mW (10dBm), software-adjustable. Transmission Distance: Roughly 500m to 600m in open air. Modulation Modes: Supports OOK, ASK, GFSK, 2-FSK, 4-FSK, and MSK. Implementation Tips Logic Levels:
A for a specific board (like Arduino Nano or ESP32 ) A sample code snippet for basic transmission Troubleshooting range or interference issues E07-M1101D-TH User Manual - Ebyte e07-m1101d pinout