Product name： UOTEK LoRa to RS-232/485/422 Converter
Model： UT-9921
● Bidirectional conversion between RS-232/485/422 interfaces and wireless LoRa, enabling network communication via wireless LoRa.
● Supports data broadcasting, data monitoring, point-to-point transmission, and transparent transmission.
● Maximum transmission distance of 5000 meters.
● Strong anti-interference capability, low power consumption.
● Sleep mode and transparent transmission mode switching.
● Star, tree, chain, and mesh network topologies.
● Multiple selectable channels, with the ability to modify wireless transmission parameters online, such as serial port baud rate, transmission frequency, air rate, and more.
Overview
LoRa is a long-range wireless communication solution. Compared to GPRS and 4G solutions, LoRa does not require a monthly network access fee and has a longer range than WiFi and Zigbee. As a result, LoRa is increasingly used in small data long-distance communication. UT-9921 utilizes SEMTECH's LoRa™ patented modulation technology, which can achieve a reception sensitivity of -142dBm and an output power of +22dBm, with an outdoor line-of-sight communication range of 5km. It features long-range, low power consumption, and strong anti-interference capabilities. UT-9921 is a serial port to LoRa converter, offering three types of serial interfaces: RS-232/485/422.
Parameter
Data Interfaces: RS-232/422/485 SMA female antenna interface
Frequency Range: 464-515 MHz
Modulation Modes: LoRa direct-sequence spread spectrum technology and GFSK (Gaussian Frequency Shift Keying) transmission modes
Wireless Channels: 255 selectable channels, each spaced 0.2MHz apart
Network Topology: Star, tree, chain, mesh network
Transmission Modes: Transparent transmission and point-to-point transmission
Serial Port Baud Rate: Configurable from 1200 to 115.2Kbps
Air Transmission Rate: 6 levels adjustable (0.3/1.2/2.4/4.8/9.6/19.2Kbps)
Operating Power: DC9V-30V, 12V/50mA
Transmission Distance: Wireless carrier 5000 meters (open space distance)
Receiver Sensitivity: -142dBm
Transmit Power: 22dBm, adjustable in multiple levels, 1dBm steps
Antenna Connection: SMA male antenna/whip antenna
Surge Protection: Power, differential mode 1KV, common mode 2KV (1.2/50uS)
Signal, RS-485/422: differential mode 1KV, common mode 2KV (10/700uS)
RS-232: 600W
Electrostatic Protection: Contact discharge 6kV, air discharge 8kV
Dimensions: 97mm×65mm×22mm (excluding antenna)
Weight: 120g
Operating Environment: -40 to 85℃, relative humidity 5% to 95%
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