Features:
1. Support USB expansion 8-way TTL (UART) with hardware flow control, can communicate simultaneously and independently
2. Onboard self-recovery fuse and protection diode can ensure stable output of current and voltage, prevent overcurrent and overvoltage, and improve impact resistance
3. Onboard TVS protection circuit can effectively suppress surge voltage and transient spike voltage in the circuit, lightning protection and anti-static
4. Onboard level conversion circuit, surge protection, anti-static, stable and safe communication
5. Onboard TTL serial port 3.3V and 5V level conversion circuit, can switch TTL communication level
6. Aluminum alloy shell, oxidized frosted treatment, CNC numerical control opening, firm and durable, exquisite workmanship
7. External 4 LED indicators, convenient for checking power supply and signal receiving and sending status

Product parameters:
1. Host interface: USB
2. Device interface: TTL (UART)
3. Communication range: 1200bps-2M
4. Temperature range: -40 degrees Celsius to 85 degrees Celsius
5. Humidity range: 5%RH-95%RH
6. Operating system: Mac, Linux, Android, Windows11/10/8.1/8/7
7. Product size: 104.5 x 70 x 28.6mm

-USB interface
Working level: 5V
Interface type: USB-B type interface
Interface protection: 200mA self-recovery fuse, ESD static protection
-Power supply interface
Interface type: 5VDC power socket
Interface protection: overvoltage protection, reverse connection protection
-TTL (UART) interface
Interface type: 50PlN reverse connection interface
Interface protection: TVS tube protection, surge and static protection
Serial port TTL level 3.3V/5V (adjustable)