Optically Isolated USB to RS232 Converter

Connect an RS-232 device to a USB port with protection against surges and ground loops.

Compatibility: Supports USB 1.0, USB 1.1, and USB 2.0 (12 Mbps).
Secure Connection: High-strength USB port ensures secure connections.
Power Supply: Powered via USB bus; no external power required.
Connector: Removable serial terminal block for easy wiring.
LED Indicators: Indicate data transmission and reception.
Use Case: Ideal for connecting legacy serial devices to modern USB ports on PCs or laptops.
Protection Features: Protects against surges and grounding loops.
Models:
SP385A-R3: Connects RS-232 devices to a USB port with 2000 Volt RMS isolation.
SP390A-R3: Supports 2-wire RS-485 or 4-wire RS-422/485 operation, designed for environments prone to ground loops.
Warranty: 5 years Double Diamond™ (Standard)

### Product Details

Optical Isolator USB to RS-232 (SP385A-R3)
Compact optical isolator connecting an RS-232 device to a USB port with isolation from surges and ground loops. Configures automatically as an additional COM port in Windows.

USB to RS422/485 Converter with Optical Isolation (SP390A-R3)
Converts USB ports to RS-422/485 with 2000 Volt isolation for surge protection. DIP switch enables 2- or 4-wire operation, recognized as an additional COM port in Windows.

### Technical Specifications:

SP385A-R3
CE Approved: Yes
Connections: (1) DB9 M, (1) USB Type B
Dimensions: 2.0 x 4.2 x 7.6 cm (H x W x D)
Indicators: LEDs (1) RD, (1) TD
Isolation: 2001 Volt RMS
Operating Environment: Temperature 0 to 70 °C, Humidity 0 to 95% non-condensing
Storage Temperature: -40 to 85 °C
Supported OS: Windows
Power: USB bus
RoHS: Yes
Speed: 460.8 kbps (serial port), 12 Mbps (USB)
Weight: 0.18 kg

SP390A-R3
Isolation: 2000 Volts
Supported OS: Windows
Connections: (1) terminal block, (1) USB Type B F
Operating Environment: Temperature 0 to 70 °C
Indicators: LEDs (1) RD, (1) TD
Power: USB bus
Dimensions: 7.6 x 4.2 x 2.0 cm (H x W x D)