Product Description

M-SX1278S2 wireless module is a Long Range 433Mhz LoRa Module, it was designed base on Semtech’s LoRa spread spectrum chip SX1278, which is an upgraded version of our S1 module (DL-RTS1278). The module adopts spread spectrum modulation technology to solve the communication distance problem that cannot be achieved by traditional FSK modulation communication technology.

It is configured with different spreading factors to minimize the impact of co-frequency interference and has super anti-interference. This module is designed with an output power of 100mw and is very compact. It can be widely used in industries such as wireless meter reading and remote industrial control.

Features

● Frequency range: 433/470/868/915 MHz (137-1020 MHZ can be customized)

● Sensitivity up to -139dBm @Lora

● Maximum output power: 20dBm

● Low receiving current: 10.3mA

● Standby current <200nA

● Data transmission rate: 1.2-300 Kbps @FSK; 0.018-37.5 Kbps @ Lora,

● LoRa, FSK, GFSK and OOK modulation modes

● Built-in antenna electrostatic protection

● 127dB dynamic range RSSI

● 256 bytes FIFO and CRC frequency hopping function

● Built-in temperature sensor and low battery indicator

● Signal is not blocked

● Operating temperature range: -40 ~ +85 °C

● Long range: 2KM in an open air (LoRa modulation)

Application

● Home security (Smart Home)

● Wireless remote control
                   
● Wireless sensor networking

● Remote meter reading
                 
● Energy control and management

● Smart buildings (Building Automation)
       
● AMR (Automatic Message Recording)

 

Technical Parameter

Parameter	Min	Typical	Max	Unit	Conditions
Operating conditions
Working voltage range	1.8	3.3	3.6	V
Working temperature range	-40		85	℃
Current consumption
Receive current		10.8		mA
Emission current		120		mA	@20dBm
Standby current		<0.2		uA
RF parameters
Frequency Range	403	433	463	MHZ	@433MHZ
	470	490	510	MHZ	@470MHZ
	800	868	900	MHZ	@868MHZ
	900	915	1000	MHZ	@915MHZ
Modulation frequency	1.2		300	Kbps	FSK
	0.018		37.5	Kbps	LoRa
Transmit power range	-1			dBm
Receive sensitivity		-123		dBm	@FSKdata=1.5kbps，Fdev=10kHZ
		-139		dBm	@LoraBW=125KHz_SF=12_CR=4/5

Please refer to the chip register setting instructions; To ensure that the PA of the module is turned on, so as to work at the maximum power, the highest bit ‘PaSelect’ of the 0x09 register must be set to 1.

 

Pin Definitions

No	Definitions	Description
1	ANT/NC	0R jumper antenna output PIN, IPEX direct output
2	GND	Connect to power ground
3	VDD 3.3V	Power Supply
4	NRESET	Reset trigger input
5	DIO0	Value I/0, can be defined by yourself
6	DIO1	Value I/0, can be defined by yourself
7	DIO2	Value I/0, can be defined by yourself
8	DIO3	Value I/0, can be defined by yourself
9	GND	Connect to power ground
10	DIO4	Value I/0, can be defined by yourself
11	DIO5	Value I/0, can be defined by yourself
12	SCK	SPI Serial Clock input
13	MISO	SPI Master Input Slave Output
14	MOSI	SPI Master Output Slave Input
15	NSS	SPI Chip Selection
16	GND	Connect to power ground

As a professional wireless module supplier, and a third party design office (of TI, Silicon Labs, Semtech), DreamLNK is specialized in radio frequency field for almost 8 years! Should there is any other question, please kindly let me know.

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