Data Sheet for Product

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Siemens RDF880KN… A6V11282546_en--_e
Smart Infrastructure Touch Screen Flush-mount Room Thermostats with KNX Communications 2021-02-26
Connection terminals
L X1 M
N
Q11 Q14 Q12
SELV
X2
3171A01
CE+ CE
-
L, N Operating voltage AC 230 V
Q11, Q12 NC contact (for NO valves)
Q11, Q14 NO contact (for NC valves)
X1, X2 Multifunctional input for temperature sensor or potential-
free switch
Factory setting:
– X1 = Window contact
– X2 = External sensor
(function can be selected via parameter P38 / P40)
M Measuring neutral for sensor and switch
CE+ KNX data +
CE- KNX data -
Connection diagrams
N1 Room thermostat
V1 Valve actuator
Lx AC 24...230 V
S1, S2 Switch (keycard, window contact, presence detector,
etc.)
B1, B2 Temperature sensor (return air temperature,
external room temperature, changeover sensor, etc.)
CE+ KNX data +
CE- KNX data –
L
N
10 A
L
N
AC 230 V
X1
M
X2
N1
V1
5(2)A
Max.
B2
S2
B1
S1
3171A12
Q11 Q14 Q12
CE+ CE-
KNX
Lx
10 A