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Predision HESC-T-033 RS-232 to 2-port RS-485 Photoelectric Isolated Converter
Manufacturer Part Number: HESC-T-033
Brand: Predision
$ 137.00
- Operating Temperature: -40°C to 85°C
- ±15 kV ESD Protection, 600 W Lightning Surge Protection per wire
- Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous)
- Supports Connection of up to 128 RS-485 Devices
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Backordered
More stock available: May 29, 2026 (UTC-4)
The HESC-T-033 is a high-performance industrial gateway designed to convert single-ended RS-232 signals into balanced, differential 2-port RS-485. Engineered for harsh environments, it features 2500Vrms optical isolation and advanced TVS (Transient Voltage Suppression) technology, providing 600W of lightning and ESD surge protection per line.
With proprietary Automatic Data Direction Control, the device operates as a transparent, plug-and-play bridge—requiring no RTS/DTR handshaking or software modifications. It supports high-speed transmission (up to 115.2 kbps) and connects up to 128 nodes per port, making it the ideal "Air-Gap" solution for reliable point-to-multipoint industrial communication.
| Standard | EIA/TIA RS-232C, RS-485 |
| Electrical Interface | DB9 Female Connector (RS-232), 10-pin Terminal Block (RS-485) |
| Input Power | 9 - 30 VDC / 350 mA |
| Interface Protection | RS-232: ±15 kV ESD Protection RS-485: 600 W Lightning Surge Protection per wire |
| Isolation Voltage | 2,500 Vrms, 500 VDC (Continuous), DC/DC module |
| Operating Mode | Asynchronous Half-duplex (RS-485) |
| Signal Indicators | Five LEDs: Power (PWR), Two Transmit (TXD), Two Receive (RXD); with Failure Detection |
| Transmission Media | Twisted-pair (UTP) or Shielded Cable (STP) |
| Baud Rate | 300 - 115.2 kbps |
| Dimension | 117 × 80 × 25 mm |
| Operating Temperature | -40°C to 85°C |
| Relative Humidity | 5% to 95% (Non-condensing) |
| Transmission Distance | 5,000m（at 9,600 bps） |
Industrial RS-232 to 2-port RS-485 Converter with Optical Isolation, Baud Rate: 300 bps - 115.2 kbps, Power: 9-30 VDC/ 350 mA, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), DC/DC module, ±15 kV ESD Protection, 600 W Lightning Surge Protection per wire, Operating Temperature: -40℃ to 85℃.
Industrial RS-232/RS-485 to 2-port RS-485 Hub, Operating Power: 9-30 VDC / 150 mA, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection, 600 W Lightning Surge Protection per wire, Operating Temperature -40℃ to 85℃.
RS-232/RS-485 to 4-port RS-485 Hub (Din-rail), Operating Power: 9 - 30 VDC/150 mA, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection, 600W Lightning and Surge Protection per wire, Operating Temperature: -40℃ to 85℃.
Industrial RS-485/422 to 4-port RS-485/422 Hub, Baud Rate: 300 bps - 115.2 kbps, Operating Voltage: 9 - 48 VDC, Transmission Distance: 1,200m (at 9,600 bps), 8/20μs 3,000A Lightning Surge Protection per wire, Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), Operating Temperature: -40℃ to 85℃.
RS-232/485 to 4-port RS-485/422 Photoelectric Isolated Hub, Baud Rate: 300 bps - 115.2 kbps, Operating Voltage: 9 - 48 VDC, Transmission Distance: 1,200m (at 9,600 bps), 8/20μs 3,000A Lightning Surge Protection per wire, Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), Operating Temperature: -40℃ to 85℃.
RS-232/RS-485 to 8-port RS-485 Photoelectric Isolated Hub, Din-rail, Input Voltage: 12 - 48 VDC, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 1,200m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), 15 kV ESD Protection (RS-232), 1,500 W Lightning and Surge Protection per wire (RS-485), 2,000 V Lightning and Surge Protection (Power Supply), Operating Temperature: -40℃ to 85℃.
Industrial RS-232/RS-485 to 8-port RS-485 Hub, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge per wire (RS-485), Operating Temperature: -40℃ to 85℃.
Industrial Rack-mount RS-232/RS-485 to 8-port RS-485 Photoelectric Isolated Hub, 1U Enclosure, 100 - 240 VAC 50/60Hz, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge per wire (RS-485), Operating Temperature: -40℃ to 85℃.
RS-232/RS-485 to 8-port RS-485 Photoelectric Isolated Hub, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge Protection per wire (RS-485), Operating Temperature: -40℃ to 85℃.
RS-232/RS-485 to 16-port RS-485 Photoelectric Isolated Hub, 1U Enclosure, Baud Rate: 300 bps - 115.2 kbps, Input Voltage: 100 - 240 VAC, 50/60 Hz, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge Protection per wire (RS-485), Operating Temperature: -40℃ to 85℃.
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