Introduction

•   It work with Modbus or transparent protocol, not work with LoRaWAN.
•   The devices to be used in a loop group for data transmission. It is like an RS-485 in semi-duplex but wireless.
•   In the loop group just pick one LoRa device to work as a MASTER and the other LoRa devices are SLAVE.
•   These devices have general LoRa features such as long range, low packet size and loose in data collecting.
•   We recommend the packet not over 100 bytes per second and the condition could accept data lost.
•   Generally it work good for environment data collection to get long trend. It’s not suitable for instant On/Off work.
•   Distance of LoRa transmission is long range subject to antenna to be Line-Of-Sight from Master to Slaves.

Application

Specifications

•   LoRa : Semtech SX1272
•   ISM band 862 ~ 936MHz
•   Receiver Sensitivity : -137 dBm
•   Transmit Output Power : 20 dBm
•   Sleep Current : 3uA (at power down state)
•   TX current < 140 mA@20 dbm , RX current < 10 mA
•   Security processor ( 128/192/256 bits AES )
•   Packet engine up to 256 bytes with CRC
•   Antenna : SMA Type , 2 dBi , changeable 
•   Distance : Up To 5000 Meters in free space
•   Data Rate : 0.244 ~ 18.2K bps (LoRa) / 300 K bps (FSK)
•   Application mode : Star
•   Serial Port
•   Port : RS-232/422/485 * 1 port ( auto Detect )
•   RS-232 : Rx , Tx , GND , RTS , CTS ( DB9 female )
•   RS-422 : Tx+ , Tx-, Rx+ , Rx- (Surge Protect )
•   RS-485 : Data+ , Data- (Surge Protect)
•   Built –in RS-422/RS-485 Terminal Resistor
•   Speed : 9600 bps〜
•   Parity : None , Odd , Even
•   Data Bit : 7, 8 / Stop Bit : 1 , 2
•   Setup Tool : Windows Utility
•   Power : DC 9 ~ 24V / 150ma @ 9V , 60ma @ 24V
•   Led Lamp : SYS (green) , Rx(red) , Tx(green)
•   Environment: Operating Temperature: -10℃〜70℃  / Storage Temperature: -20℃〜80℃
•   Dimensions : 100 * 90 * 25 mm ( W * D * H )
•   Weight : 150 gm ( not include power )

Description

PRODUCT SERIES	DESCRIPTION	QTY	INQUIRY
NT-201-S	RS232/422/485 To LoRa Interface Converter	1