E28-2G4M12SX SX1281 chip LoRa module 2.4GHz RF transceiver module LORA,FLRC,GFSK various modulation methods
[Product weight]：1.6±0.1g
[Chip solution]：SX1281
[Transmission power]：12.5dBm
[Communication distance]： 3km
[Communication interface]：SPI
[Introduction]：E28-2G4M12SX is a 2.4GHz RF transceiver module designed and produced by Ebyte, with long communication distance and extremely low current consumption in low power consumption mode. This module is a small-volume patch type (pin pitch 1.27mm). This series adopts 52MHz industrial-grade high-precision low-temperature drift active crystal oscillator; it guarantees its industrial characteristics and its stable performance. Using Semtech's SX1281 RF chip, this chip contains a variety of physical layers and a variety of modulation methods, such as LORA, FLRC, GFSK. It can be used in smart homes, security systems, location tracking, wireless ranging, wearable devices, smart bracelets and health management, etc.
| Main Parameters | model | Remark |
| Power supply voltage (V) | 0～3.6 | Exceeding 3.6V permanently burns out the module |
| Blocking power (dBm) | 10 | Less chance of burning when used at close range |
| Working temperature (℃) | -40～+85 | industrial grade |
| Main Parameters | Parameters | Remark | |
| Working voltage (V) | 1.8～3.6 | ≥3.3V guaranteed output power | |
| Communication level (V) | 3.3 | Risk of burning with 5V TTL | |
| Working temperature (℃) | -40～+85 | industrial design | |
| Working frequency band (MHz) | 2400～2500 | Supports ISM bands | |
| Power Consumption | Emission current (mA) | 45 | Instantaneous power consumption |
| Receive current (mA) | 10 | ||
| Sleep current (μA) | 2 | software shutdown | |
| Maximum transmit power (dBm) | 12～14 | ||
| Receiving sensitivity (dBm) | -128～-130 | LoRa receiver sensitivity with CR=4/5 and high sensitivity mode enabled 1 SF12,BW=203kHz | |
| communication rate | LoRa（bps） | 0.595k～253.9k | User Programmable Custom |
| FLRC（bps） | 1.3M | User Programmable Custom | |
| GFSK（bps） | 125k～2M | User Programmable Custom | |
| Main Parameters | Description | Remark |
| Reference distance | 3000m | Clear sky, antenna gain 5dBi, antenna height 2.5 meters, air rate 1kbps |
| FIFO | 256Byte | The maximum length of a single send |
| Crystal frequency | 52MHz | ±10ppm/11pF |
| Modulation | LoRa (recommended) | GFSK Mode, FLRC Mode, LoRa Mode |
| Encapsulation | SMD | |
| Interface | 1.27mm | |
| Communication Interface | SPI | 0～10Mbps |
| Dimensions | 17.8mm×15mm | |
| Antenna interface | IPEX | |
| Net product | 1.1±0.1g |
