Most versions of this module, including the E07-M1101D-SMA and E07-M1101D-TH, follow this standard pin definition: Pin Number Description Supply voltage (1.8V to 3.6V). Do not use 5V SPI Data Input. SPI Clock Input. SPI Data Output. General Purpose Digital I/O 2. SPI Chip Select (Active Low). General Purpose Digital I/O 0. Key Specifications Operating Voltage: 1.8V – 3.6V (3.3V is standard). Frequency Range: 387MHz – 464MHz (Optimized for 433MHz). Communication Interface: Maximum Transmit Power: +10 dBm (10 mW). Sensitivity: -112 dBm at 1.2 kbps. Critical Usage Notes Power Supply:
The "SMA" version (E07-M1101D-SMA) includes an SMA connector for external antennas, which significantly improves range compared to the spring antenna version. Power Stability: e07-m1101d pinout