Product Details

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Black Box
Black Box ST/DB25 Fiber Driver - short-haul modem
Extend Async RS232 data beyond the 50 ft limitation using multimode fiber at data rates up to 76.8 kbps and reach distances of 2.5 mi. (4 km). Autosensing 110–220-VAC power supply ensures reliability and continuous transmission. A range select feature compensates for coupled power variations. Switch-selectable DTE/DCE option. Set to perform like a DTE so it can communicate with another DCE device. No special cables are needed. Support RS-232 async bidirectional transmission. Use with multimode fiber cable.
Sku: EU9837
Price: $300.00

Part Number MD940A-M
SKU EU9837
UNSPSC Code 43202222
Returnable Yes
Usually Ships Call for Availability .
Billable Weight 0.92   Lb
Quantity in Stock Call  


Main Specifications
Manufacturer Warranty 1-year warranty
Weight 1.32 lbs
Dimensions (WxDxH) 2.7 in x 4.2 in x 1 in
Power AC 120/230 V
Max Transfer Distance 2.5 miles
Optical Wave Length 850 nm
Data Transfer Rate 76.8 Kbps
Cabling Type Serial RS-232
Form Factor External
Device Type Short-haul modem - ST multi-mode / 25 pin D-Sub (DB-25)
Product Description Black Box ST/DB25 Fiber Driver - short-haul modem
Extended Specifications
  Device Type Short-haul modem
  Form Factor External
  Connectivity Technology Wired
  Cabling Type Serial RS-232
  Data Transfer Rate 76.8 Kbps
  Optical Wave Length 850 nm
  Max Transfer Distance 2.5 miles
  Features Flow control, full duplex capability
Expansion / Connectivity
  Interfaces 1 x network - ST multi-mode female x 2 ¦ 1 x RS-232 - DB-25 male
  Power Device External power adapter
  Voltage Required AC 120/230 V (50/60 Hz)
Dimensions & Weight
  Width 2.7 in
  Depth 4.2 in
  Height 1 in
  Weight 1.32 lbs
Manufacturer Warranty
  Service & Support Limited warranty - 1 year

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Networking Form Factor - External
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Networking Data Transfer Rate - 76.8 Kbps
Service & Support Type - 1-year warranty