Product Descriptions
E28-2G4M12S/SX is a 2.4GHz bluetooth module designed by Chengdu Ebyte,with long distance and ultra-low power consumption. E28-2G4M12XX is small-sized SMD module(pin spacing 1.27mm),built-in PCB antenna and IPEX antenna. High precision
52MHz crystal is used. Based on the original imported RF chip SX1278 from SEMTECH,The IC SX1280 features multiple physicallayers and various modulating methods such as LoRa, FLRC and GFSK, the special modulating methods and processing ways
enable longer operating range under LoRa and FLRC modulating methods, and the GFSK method covers BLE protocol.
The outstanding ultra-low power consumption and the DC-DC and Time-of-Flight on chip make the chip much more capable for smart home, security system, tracking and locating, wireless distance measuring, wearable electronics, smart bracelet and
health management & etc. SX1280 supports RSSI,users need to conduct a secondary development based on their own demands;SX1280 also integrates time of flight for ranging functions. Since the module is a pure RF transceiver module, you need to
use the MCU driver or a dedicated SPI debug tool.
Product Features
? Communication distance tested is up to 3km；
? Maximum transmission power of 18mW, software multi-level adjustable；
? Compatible with BLE protocol；
? Support the global license-free ISM 2.4GHz band；
? Support air date rate of 0.476kbps～2Mbps；
? Support multiple modulation methods, (GFSK Mode ，FLRC Mode，LoRa Mode)；
? Large capacity FIFO, supports 256Byte data buffer；
? Support 1.8V~3.6V power supply, power supply over 3.3V can guarantee the best performance；
? Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
? IPEX and PCB antenna optional, good for secondary development and integration；
? The air data rate is adjustable, the maximum air data rate is up to 1.3 Mbps in FLRC mode；
? Excellent anti-blocking properties；
? Ranging, with Time-of-flight function.
Product Application
? Home security alarm and remote keyless entry；
? Smart home and industrial sensors；
? Wireless alarm security system；
? Building automation solutions；
? Wireless industrial-grade remote control；
? Health care products；
? Advanced Meter Reading Architecture(AMI)；
? Automotive industry applications.
Specifications
| Attribute | Attribute value | Notes |
| ANSM-Part# | ANSM-E28-2G4M12SX | |
| 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 |
| 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 |
| Receiving sensitivity (dBm) | -128～-130 | LoRa receiver sensitivity with CR=4/5 and high sensitivity mode enabled 1 SF12,BW=203kHz |
| 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 | |
| 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 | |
| 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 |
Actual product photos
Product Data Book：
For more product information, please download the PDF
Payment&Transportation
Official Certificate&Certificate
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Standard packaging
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