Sauter Components LRA 4 Series Quick Start Manual

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
Type
LRA420R K104
LRA420R K124
LRA450R K104
LRA450R K124
Setting range
Setting accuracy
Sensor
Humidity accuracy
Hysteresis (average)
Radio frequency
Transmission power
Range 1)
Data transmission
Power supply
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 kΩ, 1.5 m, for floor or outside temperature, max. 70 °C
0313367003 Cable-type NTC sensor, 10 kΩ, 3 m, for floor or outside temperature, max. 70 °C
0450232001 Outside-temperature NTC sensor, 10 kΩ, 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
Colour
white
black
white
black
5...30 °C
±0.1 K
NTC 10 kΩ
±3.5% rh at 55% rh, 23 °C
> 3% rh
868.3 MHz
13 mW (self-adjusting)
approx. 50 m
every 10 minutes
2 × AAA 1.5 V 2)
Humidity range
% rh
–
–
5...95
5...95
Perm. ambient temperature
Perm. ambient humidity
Weight
Ingress protection
Protection class
CE conformity as per:
R&TTE 1999/5/EG
Dimension drawing
Cover plate
Outside-temperature
sensor
Fitting instructions
Sauter Components
0...55 °C
5...80% rh
0.13 kg
IP 20 (EN 60529)
III (EN 60730)
EN 300220-1
EN 300220-3
M11485
M11487
M11492
P100009964
45.016/1
T
Y10164
7145016003 01