LoRa Spread Spectrum Wireless Communication Module SX1278 20DBM Transmit Power Long‑Distance RF Transceiver Module For IoT Smart Device Project

SX1278 LORA Spread Spectrum Wireless Communication Module

📌 Product Overview

This is a high‑performance LoRa spread‑spectrum wireless communication module built around SX1278 RF chip. It supports multiple modulation modes including LORA, FSK, GFSK and OOK, delivers up to 20dBm transmit power and ultra‑high receiving sensitivity of -136dBm, realizing long‑distance anti‑interference wireless data transmission. The module adopts SPI data interface, works at 2.1‑3.6V (typical 3.3V), with compact 16*16mm PCB size, suitable for embedded secondary development.

📋 Main Parameters

Item	Parameter
RF Chip	SX1278
Operating Frequency	420~450MHz (customizable)
Modulation Mode	LORA / FSK / GFSK / OOK
Transmit Power	20dBm
Receiving Sensitivity	-136dBm
Receive Current	≤10.8mA
Sleep Current	≤1μA
Transmit Current	≤120mA @20dBm
Operating Voltage	2.1‑3.6V, typical 3.3V
Antenna Impedance	50Ω
Data Interface	SPI
Dimension	16mm × 16mm, thickness 1.8mm
Working Temperature	-40℃ ~ +85℃

🔌 Pin Definition

Pin No.	Pin Name	Type	Description
1	GND	–	Ground
2	MISO	I	SPI data output
3	MOSI	O	SPI data input
4	SCK	I	SPI clock input
5	NSS	I	SPI chip select input
6	RESET	I/O	Reset trigger input
7	DIO5	I/O	Configurable digital I/O
8	GND	–	Ground
9	ANT	–	RF antenna input & output
10	GND	–	Ground
11	DIO3	I/O	Configurable digital I/O
12	DIO4	I/O	Configurable digital I/O
13	3.3V	–	Power supply input
14	DIO0	I/O	Configurable digital I/O
15	DIO1	I/O	Configurable digital I/O
16	DIO2	I/O	Configurable digital I/O

✨ Core Features

✅ Long‑range LoRa spread‑spectrum technology, strong anti‑interference capability ✅ Max 20dBm transmit power, receiving sensitivity down to ‑136dBm ✅ Multi‑modulation support: LORA, FSK, GFSK, OOK ✅ Ultra‑low sleep current ≤1μA, perfect for battery‑powered devices ✅ Standard SPI interface, easy to connect with MCU ✅ Compact 16×16mm small‑size PCB design ✅ Wide working temperature range for industrial‑grade scenarios

🛠 Application Scenarios

• Smart home & smart transportation, sensor monitoring network
• Industrial automation, modern agriculture, smart building control
• Automatic meter reading system
• Data acquisition for water conservancy, oil field, mine, weather station
• Street lamp control, power grid monitoring, wind‑solar hybrid equipment
• Industrial wireless data transmission and environmental monitoring
• Hand‑held data collector, embedded wireless data transmission
• Replace wired communication for various wireless transmission demands

⚠ Important Usage Notice

1. Keep input power ripple factor within 50mV; power supply needs to provide transient pulse current over 300mA with pulse width ≥800ms.
2. When wiring, connect module GND together with host MCU GND, otherwise abnormal communication may occur.
3. Keep antenna away from MCU to avoid radio interference.
4. Do not touch module or antenna during operation for optimal RF performance.
5. Avoid laying wires or copper foil under module and antenna area.
6. Module does NOT support reflow soldering; wave soldering is allowed with temperature controlled below 240℃.

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