Datasheet
Highlights
IMC-21 Series
Features
Flexible Media Conversion Capability
Multi mode, single mode with SC or ST fiber connector available
DIP Switch to select FDX/HDX/10/100/Auto/Force
Link Fault Pass-Through (LFP)
Industrial Rugged Design 
-10 to 60°C operating temperature range
Case design meets IP30 protection standard 
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Power inputs support 24 VDC or 24 VAC
DIN-Rail mounting ability
Recommended Accessories
DR series DIN-Rail 24 VDC power supplies
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Introduction
IMC-21 industrial media converters are entry-level 10/100BaseT(X) 
to 100BaseFX and 10BaseT to 10BaseFL media converters that are 
specially designed for reliable and stable operation in harsh industrial 
environments. IMC-21 is a cost-effective solution that runs on either 
a 12 to 45 VDC power input or 18 to 30 VAC power input. IMC-21 can 
operate reliably in temperatures ranging from -10 to 60°C, and the 
rugged hardware design helps ensure that your Ethernet equipment 
can withstand demanding industrial conditions.
 Multi mode, single mode with SC or ST fiber connector
 Link Fault Pass-Through (LFP)
 Power inputs: 12 to 45 VDC, 18 to 30 VAC (47-63 Hz)
 -10 to 60°C operating temperature range
 DIP Switch to select FDX/HDX/10/100/Auto/Force
 DIN-Rail mounting ability
Entry-level Industrial 10/100BaseT(X) to 100BaseFX 
& 10BaseT to 10BaseFL Media Converter
IMC-21
 7-6
www.moxa.com         e-mail: info@moxa.com
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Industrial Media Converters
Industrial Media Converters
Technology
Standards: IEEE802.3, 802.3u, 802.3x
Interface
RJ45 ports:
• IMC-21 (10/100BaseT(X) to 100 BaseFX): 10/100BaseT(X)
• IMC-21 (10BaseT to 10BaseFL): 10BaseT
Fiber ports:
• IMC-21 (10/100BaseT(X) to 100 BaseFX): 100BaseFX (SC/ST connectors) 
• IMC-21 (10BaseT to 10BaseFL): 10BaseFL (ST connector only)
LED Indicators:
• IMC-21 (10/100BaseT(X) to 100BaseFX): Power, 10/100M (TP port), 
100M (Fiber port), FDX/COL (Fiber port)
• IMC-21 (10BaseT to 10BaseFL): Power, LNK/ACT (Fiber port), LNK 
and ACT (TP port)
DIP Switch: 
• IMC-21 (10/100BaseT(X) to 100BaseFX): 
- TP port’s 10/100M, Half/Full mode, and Force/Auto mode are DIP 
switch selectable
- Fiber connection’s Half/Full mode is DIP switch selectable
- Link Fault Pass-Through (LFP) is DIP switch selectable
• IMC-21 (10BaseT to 10BaseFL): TP port's MDI/MDI-X and Half/Full 
mode are DIP Switch selectable
Optical Fiber
Distance:  10BaseFL: 2 km, 820 nm       
  100BaseFX (Multi mode): 5 km, 1300 nm   
  100BaseFX (Single mode): 40 km, 1310 nm 
Min. TX Output:  10BaseFL: -16 dBm       
  100BaseFX (Multi mode): -20 dBm     
  100BaseFX (Single mode): -5 dBm
Specifications


