Honeywell International Inc. RTU-L12 Manuale Utente
1.5.4 Input Cable 2 – Push Button
Supervised input 2 is for the push button status; resistors must be installed
at the door push button contacts.
at the door push button contacts.
Wh
it
e
Yel
lo
w
bu
tt
on
con
tac
t
NO
CO
NT
ACT
IN2 (orange)
GND
Figure 9: Supervised Input 2 connection– Push button
Yellow resistor: 1210 Ohm 1%
White resistor: 392 Ohm 1%
Push button close resistance: 296 Ohm
Push button open resistance: 1210 Ohm (normality)
Max wires resistance: 25 Ohm
White resistor: 392 Ohm 1%
Push button close resistance: 296 Ohm
Push button open resistance: 1210 Ohm (normality)
Max wires resistance: 25 Ohm
Note: in case the push button is unused the INPUT has to be
terminated with the Yellow resistor.
terminated with the Yellow resistor.
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