[Chipset]：PAN3120

[Operating Frequency]： 410–510 MHz

[Transmit Power]： 20 dBm

[Communication Range]： 5 km

[Dimensions]：10*10mm

[Weight]： 0.5 ± 0.1 g

[Introduction]：The E291 series is a pure hardware module based on the PAN3120 chip from PASIC Microelectronics. It supports a maximum transmit power of 30dBm, operates in the 410~510MHz frequency band, and features small size, low power consumption, and long communication range, making it suitable for smart home, wireless meter reading, and medium-to-long-range wireless communication applications. Because this module is a pure RF transceiver module, it requires an MCU driver or a dedicated SPI debugging tool.