Room temperature measuring transducer RTM1-Modbus
temperature Temperature

Room temperature measuring transducer THERMASGARD® RTM1-Modbus

Product group: WG01

In Stock

Usually ships in 1 to 3 days
118,68 €
141,23 € incl. VAT + shipping


Room temperature measuring transducer THERMASGARD® RTM1-Modbus
The calibratable room temperature measuring transducer THERMASGARD® RTM1 - Modbus with Modbus connection, in an elegant housing (Baldur 1) with snap-on lid, base with 4-hole attachment, optionally with/without display, for detecting room temperature (0...+50 °C). International system of units SI (default) can be changed to imperial (via Modbus). The following parameters can be retrieved via Modbus: Temperature, dew point temperature. Available as a room control unit in various type versions with setpoint potentiometer (%).
A long-term stable, digital temperature sensor guarantees exact measurement results. The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible. Modbus sensor with galvanically separated RS485 Modbus interface, selectable bus termination resistance, DIP switches for setting the bus parameters and bus address in a currentless state, internal LEDs for telegram status display and two-line display (illuminated, in the 7-segment and dot-matrix range, individually programmable).

Technical details

Voltage supply
24 V AC (± 20 %) and
15…36 V DC
Power consumption
< 1,0 W/ 24 V DC
< 2,2 VA/ 24 V AC
Data points
Temperature [°C], dew point [°C]
Deviation of humidity
typical ± 2.0 % (20…80 % RH); at + 25 °C, otherwise ± 3.0 %

Temperature deviation
typically ± 0.2 K at +25 °C
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
Measuring range
0...+50 °C
Zero point offset
± 10 °C, adjustable by potentiometer
Ambient temperature
storage –35...+85 °C;
operation 0...+50 °C
clean air and
non-aggressive, non-combustible gases
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
Signal filtering
4 s / 32 s
Process connection
by screws
Electrical connection
0.2 - 1.5 mm², via terminal screws
plastic, material ABS,
colour pure white (similar to RAL 9010)
85 x 85 x 27 mm (Baldur 1)
wall mounting or on in-wall flush box, Ø 55 mm,
base with 4 holes, for attachment to vertically or
horizontally installed in-wall flush boxes for rear cable entry,
with predetermined breaking point for cable entry
from top/ bottom in case of plain on-wall installation
Long-term stability
± 1 % per year
Permissible air humidity
< 95 % RH, non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 30 (according to EN 60 529)
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
Two-line display with illumination,
cutout 36 x 15 mm (W x H),
for displaying the ACTUAL temperature and the internal diagnostics
(sensor breakage, sensor short circuit)
switchable metric / imperial