Features

• 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.

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 )