[Chip solution]：SX1278
[Transmitting power]：33dBm
[Communication distance]：16km
[Product size]：24*38.5m
[Introduction]：E32-400M33S is a 410~493MHz SMD LoRaTM wireless module with a maximum transmitting power of 2W, which is independently developed based on the SX1278 produced by Semtech in the United States. As the imported SX1278 is used as the core of the module, a power amplifier (PA) and a low noise amplifier (LNA) are built in on the original basis, so that the maximum transmitting power reaches 1W while the receiving sensitivity is further improved, and the overall communication stability is greatly improved compared with products without power amplifiers and low noise amplifiers. This module is mainly aimed at smart homes, wireless meter reading, scientific research and medical treatment, as well as medium and long-distance wireless communication equipment.
Official Store
| serial number | pin | Pin direction | Remark |
| 1 | GND | - | Ground wire, connected to the power reference ground |
| 2 | GND | - | Ground wire, connected to the power reference ground |
| 3 | GND | - | Ground wire, connected to the power reference ground |
| 4 | GND | - | Ground wire, connected to the power reference ground |
| 5 | GND | - | Ground wire, connected to the power reference ground |
| 6 | RXEN | input | The radio frequency switch receives the control pin, connects to the external microcontroller IO, and is active at high level. |
| 7 | TXEN | input | RF switch emission control pin, connected to external microcontroller IO, active at high level |
| 8 | DIO2 | input/output | Configurable general-purpose IO port (see SX1276 manual for details) |
| 9 | VCC | - | Power supply, range 3.3~5.5V (it is recommended to add external ceramic filter capacitors) |
| 10 | VCC | - | Power supply, range 3.3~5.5V (it is recommended to add external ceramic filter capacitors) |
| 11 | GND | - | Ground wire, connected to the power reference ground |
| 12 | GND | - | Ground wire, connected to the power reference ground |
| 13 | NC | - | hanging in the air |
| 14 | DIO3 | input/output | Configurable general-purpose IO port (see SX1276 manual for details) |
| 15 | DIO4 | input/output | Configurable general-purpose IO port (see SX1276 manual for details) |
| 16 | GOD5 | input/output | Configurable general-purpose IO port (see SX1276 manual for details) |
| 17 | GND | - | Ground wire, connected to the power reference ground |
| 18 | GND | - | Ground wire, connected to the power reference ground |
| 19 | DIO1 | input/output | Configurable general-purpose IO port (see SX1276 manual for details) |
| 20 | GOD0 | input/output | Configurable general-purpose IO port (see SX1276 manual for details) |
| 21 | NRST | input | Chip reset trigger input pin |
| 22 | MISO | output | SPI data output pin |
| 23 | SMOKE | input | SPI data input pin |
| 24 | SCLK | input | SPI clock input pin |
| 25 | NSS | input | Module chip select pin, used to start an SPI communication |
| 26 | GND | - | Ground wire, connected to the power reference ground |
| 27 | ON | - | Antenna interface, stamp hole (50Ω characteristic impedance) |
| 28 | GND | - | Ground wire, connected to the power reference ground |