Honeywell International Inc. RTU-L19 Manuale Utente

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1.5.3 Input Cable 1 – Door Contact 
The balanced input 1 is dedicated to door status control; the balancing 
resistances must be positioned near the clean sensor contact. 
Wh
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 d
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 c
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CON
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A
CT
 
Figure 7: Connection for Balanced Input 1 – Door Contact 
GND (black) 
IN1 (green / white) 
 
 
 
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