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I. Product Introduction
YT-2207 is a 7-port industrial grade optical isolation RS-485 hub. The YT-2207 7-port optical isolation 485 hub can provide a more flexible RS-485 star bus structure. The RS-485 interface input and output terminals adopt independent driving methods, changing the original single bus structure to a network structure, bringing great benefits to engineering construction and system stability. Industrial grade photoelectric isolation: Provide 2.5KVrms photoelectric isolation for all RS-485 interfaces, effectively solving transmission problems caused by external lightning surges and ground potential differences. Automatic control of data flow, solving data flow problems through hardware, automatically identifying and controlling the direction of data transmission. Equipped with short circuit and open circuit protection function, RS-485 port fault alarm function, and the ability to automatically cut off the fault port. This design ensures that when the RS-485 port device connected to it fails, the faulty RS-485 port will be isolated to ensure the normal operation of other network segment devices

YT-2207 is designed with alloy shell, adopts wire pressing terminal interface, and is equipped with pluggable terminal blocks. It is flexible and convenient to use. It is widely used in point-to-point communication, industrial automation control system, all-in-one card, Door security, parking lot system, industrial distribution system, various remote control and measurement systems, POS cash register, bank, insurance, securities, canteen food selling system, traffic charging system, various PLC, data Electricity meter, gas meter, etc.

II. Product Features
1. Convert RS-232 data transmission (TXD) and data reception (RXD) signals into balanced RS-485/422 signals
2. External power supply with strong load capacity
3. Automatic control technology of data flow direction is adopted to automatically identify and control data transmission direction and automatically adapt to Baud
4. Designed with photoelectric isolation scheme, it has strong anti-interference ability
5. Adopting dedicated DC/DC power isolation module to prevent common ground interference
6. RS485 output provides 1200W lightning protection, surge protection, and+/-15kV ESD protection
7. Enhanced communication chip, supporting 128 points
III. inventory
1. One YT-2207 seven way RS-485 hub;
2. One DC12V/500mA standard power supply;
3. 1 serial data cable
4. One user manual.

System parameters
Interface: Compliant with EIA RS-232, RS-485 standards
RS-232 signals: TX, RX, GND
RS-485 signal: T/R+, T/R-
RS-422 signals: T/R+, T/R -, R+, R-
Working mode: Supports asynchronous transmission, point-to-point or multipoint, 2-wire half duplex
Baud: 300 ～ 115.2Kbps, automatic detection of serial port signal rate
Direction control: automatic discrimination and control of data transmission direction
Transmission distance: 5000 meters (9600bps) at RS-485 end, recommended not to exceed 15 meters at RS-232 end
Optoelectronic isolation: isolation voltage 2.5KVrms
Lightning protection: RS-485/422 output provides 1200W lightning protection
Indicator light: Equipped with power and data flow indicators, which can be used to determine the type of fault.
Static electricity protection: 15KV static electricity protection
Work environment
Working temperature: -20 ℃ to 60 ℃
Humidity: Relative humidity 5% to 95%
Working power supply
Input power supply: 9-30V external DC power supply (standard 220V to DC12V/500mA power supply)
Power consumption: Static power consumption within 100mA, average dynamic power consumption within 200mA
Mechanical structure
long × wide × Height: 113mmX55mmX25mm
Shell: Iron shell
Color: Black
Weight: 250g