Overview; Brief Introduction; Features; Application - Ebyte E28-2G4M12 Series User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.

1. Overview

1.1 Brief introduction

E28-2G4M12S/SX is a 2.4GHz bluetooth module designed by Chengdu Ebyte,with long distance and ultra-low
power consumption. E28-2G4M12S 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 SX1281 from SEMTECH, it features multiple physical layers 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. SX1281 supports RSSI,users need to conduct a secondary development based on their
own demands;SX1281 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.

1.2 Features

Communication distance tested is up to 3km；
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Maximum transmission power of 18mW, software multi-level adjustable；
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Compatible with BLE protocol；
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Support the global license-free ISM 2.4GHz band；
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Support air date rate of 0.476kbps～2Mbps；
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Support multiple modulation methods, (GFSK Mode ，FLRC Mode，LoRa Mode)；
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Support 1.8V~3.6V power supply, power supply over 3.3V can guarantee the best performance；
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Industrial grade standard design, support -40 ~ 85 °C for working over a long time；
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IPEX and PCB antenna optional, good for secondary development and integration；
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The air data rate is adjustable, the maximum air data rate is up to 1.3 Mbps in FLRC mode；
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Excellent anti-blocking properties；
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Ranging, with Time-of-flight function.
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1.3 Application

Home security alarm and remote keyless entry；
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Smart home and industrial sensors；
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Wireless alarm security system；
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Building automation solutions；
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E28-2G4M12XX User Manual
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