45.016/1
Sauter Components
LRA 4**: Electronic room operating unit (868 MHz)
How energy efficiency is improved
Individual, optimised energy use through precise adherence to setpoint.
Areas of use
For single-room control in residential and commercial properties, with wireless, bi-directional data
transmission.
Features
•
Room operating unit with bi-directional wireless transmission for heating/cooling
•
Transmission frequency 868 MHz, encoded
•
NTC sensor
•
Easy addressing, parameterisation and monitoring using sensor buttons
•
Large TFT LCD, black on grey, 32 × 38 mm
•
Integrated and configurable time programme
•
Heating/cooling change-over using a room operating unit or via the input on the controller
•
Party function and additional functions can be selected
•
Room operating unit can be configured as an additional sensor
•
Connection for floor, room or outside-temperature sensor
•
Contemporary design
Technical description
•
Flat housing of white (RAL9016) or black (RAL9005) thermoplastic
•
Temperature range 5…30 °C
•
With settable frost-protection facility, factory setting 8 °C
•
Suitable for wall mounting and recessed junction box
•
Standard battery 2 × 1.5 V AAA
T
Y10164
Type
Colour
Humidity range
% rh
LRA420R K104
white
–
LRA420R K124
black
–
LRA450R K104
white
5…95
LRA450R K124
black
5…95
Setting range
5...30 °C
Perm. ambient temperature
0...55 °C
Setting accuracy
±
0.1 K
Perm. ambient humidity
5…80% rh
Sensor
NTC 10 k
Ω
Weight
0.13 kg
Humidity accuracy
±3.5% rh at 55% rh, 23 °C
Hysteresis (average)
> 3% rh
Ingress protection
IP 20 (EN 60529)
Protection class
III (EN 60730)
Radio frequency
868.3 MHz
CE conformity as per:
Transmission power
13 mW (self-adjusting)
R&TTE 1999/5/EG
EN 300220-1
Range
1)
approx. 50 m
EN 300220-3
Data transmission
every 10 minutes
Power supply
2 × AAA 1.5 V
2)
Dimension drawing
Cover plate
Outside-temperature
sensor
M11492
Fitting instructions
P100009964
1)
In standard buildings or houses, depending on the ambient conditions, 40 m in buildings, 200...300 m in open areas (depending on obstruc-
tions and local sources of interference)
2)
Supplied with the unit
Accessories
0313367001
Cable-type NTC sensor, 10 k
Ω
, 1.5 m, for floor or outside temperature, max. 70 °C
0313367003
Cable-type NTC sensor, 10 k
Ω
, 3 m, for floor or outside temperature, max. 70 °C
0450232001
Outside-temperature NTC sensor, 10 k
Ω
, in housing, -50…+90 °C, IP43, connected via two
screw terminals, see fitting instructions P100011523
0450241001
Cover plate, white (RAL 9016), dimensions 138 mm × 72.5 mm
0450541021
Cover plate, black (RAL 9005), dimensions 138 mm × 72.5 mm
*)
Dimension drawing or wiring diagram is available under the same number
7145016003 01