Honeywell International Inc. RTU-L19 Manuale Utente

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1.5.4 Input Cable 2 - Button 
Balanced input 2 is dedicated to status control of the Open button; the 
balancing resistances must be positioned near the clean contact of the 
button. 
Wh
it
e
Yel
lo
w
bu
tt
on
 con
tac
t
NO
 CO
NT
ACT
 
 
GND 
IN2 (green / gray) 
Figure 8: Connection for Balanced Input 2 - Button 
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