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		Legacy products
Galvanic separation | 
			Operating temperature range | 
		
Power supply | 
			Overvoltage durability | 
		
M-Bus devices | 
			M-Bus line length | 
		
Designation | 
			Application | 
		
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			Legend:
		
		
		| Power supply | |
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			AC - alternating current | 
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			DC - direct current | 
| Galvanic separation | |
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				Yes - M-Bus line from power and Ethernet. Yes - Ethernet interface from power source.  | 
		
| Operating temperature range: | |
| 
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			Positive operating temperatures (on Celsius scale). | 
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			Negative operating temperatures (on Celsius scale). |