Stand alone controllers

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Welcome at our website!

Our company is grounded at 1949 in Berlin Germany. The name Rüster stands for High Quality and Service since the start of the company.

Rüster develops and manufactures a wide range of sensors and transmitters for Industrial and HVAC proposes. With our new line of products we decided that it was time to show the world our Unique solutions for HVAC applications.

Our products are not only Innovative and High Quality but also excellent priced!

Rüster building controls is a part of Paul Rüster & Co GmbH

Paul Rüster & Co.GmbH

Paul Rüster & Co GmbH grounded in 1949 in Berlin Germany by Paul Rüster. Rüster is from the start of the company well known as developer and manufacture of innovative and High quality pressure transmitters, resistance thermometers for control of motors and generators, humidity sensing etc (with or without EX approval)

In our industrial delivery program there is a wide range of EX sensors and transmitters, sensors and transmitters special developed for sea going vessels, trains and offshore etc. All these solutions can be ordered with or without calibration!

Our success as a producing company is largely a function of how quickly it responds to new market requirments. Therfore our working methods are state of the art. In certain areas we cooperate closely with Universities, Institutes and partners.

Paul Rüster & Co GmbH is a ISO 9001 approved company.
Want to know more about our possibillitys and solutions? Contact our sales department for more information!

Rüster stand alone comfort controllers & thermostats

AS200 series

AS200 Series of bi-metal room thermostats

The AS200 series of bimetal room thermostats are special designed to control the temperature in single rooms. The thermostats can be employed in air-conditioning systems to drive two pipe fan coil units. It controls through a SPDT contact a 2 position valve (VSX series) witch operates in heating or cooling mode depending on the season changeover.


1x SPDT 5(2)A 250Vac - summer/winter changeover- 3 speed fan selector- range 10..30°C


1x SPDT 5(2)A 250Vac - range 5..30°C


1x SPDT 5(2)A 250Vac - summer/winter changeover- range 5..30°C
Type Differential K
AS205 1   18,00 C
AS206 0,5  
AS207 0,5  
4200 series

AX200-series of single room fancoil controllers

AX236 is an ON/OFF room thermostat for conditioning and 3 fan speed control. The AX236 room thermostat is used in conditioning plant and it is particularly suitable for residential and office applications. The AX236 room thermostat is composed of a white ABS housing and a base containing the electronic card and terminal board. Power supply 230 V~ 50 - 60 Hz, temperature range 5T30 °C

Type Differential K
AX236 0.5   38,00 C

AX500-series of single room controllers

AX526 is a proportional room thermostat equipped with two proportional output 0..10 V-, power supply 24 V~.  AX526  is used in heating, thermal process, air-conditioning systems, in civil and industrial plants whenever temperature control is required. Control is carried out by a 0..10 V- proportional control of a motorised valve or of two motorised valves in sequence. Typical applications are: reheating coil control with V.XT/MVT or V.B/MVB56 valves, small A.H.U. - D.P.C, multizone plants, heating/cooling coils with V.XT/MVT or V.B/MVB56 valves in hot/cool sequenc


Power supply 24vAC - 2x 0..10Vdc outputs (heating & cooling)


Power supply 24vAC - 2x 0..10Vdc outputs (heating & cooling)-On/Off switch- 3 fan speed controller


Power supply 24vAC - 2x 0..10Vdc outputs (heating & cooling)-On/Off switch electric heater output & LCD


Power supply 24vAC - 2x 0..10Vdc outputs (heating & cooling)-On/Off switch- 3 fan speed controller & LCD

AX526     82,00 C
AX527 89,00 C
AX536     107,00 C
AX537     118,00 C

Apollo Series Touch screen comfort controllers

With the introduction of the Apollo series of touch screecomfort controllers. a perfect mix of aesthetics, intuitive operations and performance in an amazingly affordable package.

Based on the highly successful chamelean format, the Apollo additionally brings an attractive touch screen with unique "Touch to Adjust" logic. The comfort controller has a input for a remote sensor, outdoor sensor, outputs for fan control (3 speed), and 24Vac outputs for cooling and heating. Standard the controller is supplied with logic for a cool/heat system or heat pump system.


- 24Vac or Battery powered (2xAAA)
- Large Backlit LCD Touch screen
- Security Logic inc Key lock & Limit control
- 7 days, 5+2 day or manual operation
- Programmable Fan logic
- Heat/Cool & Heat pump logic
- single & multistage control
- Remote sensor input
- Outside sensor input
SMT800 Apollo I   179,25 C
SMT101 Apollo II Only heating 179,25 C

DGTOUCH Touch screen comfort controller

DG-TOUCH is a programmable room thermostat with a wide touch screen display. The user can set 3 different temperature levels with a time schedule up to 24 events per day. DGTouch is powered with 2 batteries and it designed for wall mounting. DGTouch can control both heating and colling systems with a variable hysterisys. The wide touch screen display allow a very easy programming and set up also for not skilled personnel.

Features :

- Summer/Winter operation mode;

- automatic programming with 7 programs for Winter operation mode (modifiable) and 7 programs for summer operation mode (modifiable);

• ON/OFF or proportional temperature control;

• 5 settable temperatures: T1, T2, T3 in automatic operation, Tm in manual operation, Toff in off mode (frost protection temperature, removable);

• minimum regulation interval: 1 hour;

• switching delay settable among 15,30 or 45 minutes (independent for each hour);

• monostable relay output 5A/250Vac

• password protected lock keypad;

• automatic summer/winter time change;

• display with blue blacklighting (activation afeter a key pressure) to check operation status, time and day and temperature;

• digital input for clean contact with whom to switch on or of the programmable thermostat remotely by telephone;

• plastic base for wall-mounting installation or to cover the in-built three module box;

• terminals in the back of the instrument for connection to the realy output and external contact;

• touch screen keyboard for the instrument programming.

DGTOUCH     125,85 C

SMT-700 Elegance

Rüster are pleased to present you with the SMT700 Elegance wall comfort controller. The controller is designed to be extremely attractive yet unobtrusive. Simple to use while still having advanced control capability. This comfort control option has a room unit with large display and temperature sensor. The room unit is connected to the controller by the magic wiring solution of Smart Temp.


7day 4 or 2 event programming or non programmable mode (with night set back)

Auto season changeover between Heat & Cool

Built in Active 2 zone control (With zone temperature display)

sinle & 3 speed Fan control with Auto fan speed (set by system installer)

Multistage equipment control

Built in fan coil smart control (Warm start & residual Heat/Cool run on)

Equipment fault/Occupancy inputs (2) with status display on the LCD

Build in economy function using outside air for free heating & cooling

Flow vertification interlock

Large Backlit liquid Crystal display

Powered from 24Vac or line voltage

 Easy installation

Magic touch buttons

SMT700     309,75 C

SMT-770 Chameleon

The SMT-770 Chameleon platform is special designed to have a flexible control solution for comfort control with high energy savings.

With the SMT-770 Chameleon you get more then 198 control options in one housing!

Easy to install

The SMT770 Chameleon is not only easy in use, maintanance free but also very easy to install! All connections are made on the backlit of the controller, with easy programming in mind our engineers developed a installer menu witch is easy in use! To program the controller you do not need a large manual anymore!

Energy saving

With the Chameleon engine we provide a platform witch is designed to save energy! Against traditional systems the SMT-920 saves up to 40% on the energy use!


Auto season change over

Selectable programmable or manual mode

Heat cool or heat pump logic

High & Low balance points

Keyboard and/or temperature locks

Occupancy sensor inputs

Adaptive recovery (optimised start)

Smart fan logic for commercial control

Outside air temperature display

Volt free relays

Large Backlit EL display

Integrated modbus option

Replace almost all 24V thermostats & controllers


Price D.G.



RS-1Room temperature sensor23,63C
RS-WWireless temp sensor
OC-3D Occupancy module 106,31 C
SMT-PIR Occupancy sensor 61.43 C
EC-02 Extention module 125,00 C 
VSXThermal valves

Read more


SMT-131 Smart

The SMT 131 Smart comfort controller is designed with estetics, innovation and high quality in mind.

This unique solution offers not only easy install and easy in use but is robust has different control possibility's.

With the large Touch screen with dimmable backlight, the integrated Modbus communication protocol, and  his low profile makes that the SMT131 Smart can be easely integrated in many BMS systems.

Energy saving
The SMT-131 is developed with the latest innovative technology's. With special energy saving logic integrated in the control stratagy of the SMT131 it is possible to save up to 40% Energy against traditional control systems.  

The SMT-131 is developed with energy saving and easy use in mind! One of the unique features of the SMT 131 Smart is the integrated hotel room logic. To be sure that the hotel guest has the right comfort when he is entering the room, the SMT-131 can be equiped with the special OC-3D occupancy module. This module has a 230V @ 10A output for controlling the electra in the room, a volt free output to activate the SMT131, several occupancy sensor inputs and a input for a door switch. [read more]


Bright Backlit Touch screen

Ontuitive operation

Relay outputs

Single or three fan speed control

Heat pump or heat cool control logic

0..10Vdc valve control logic

Extensive installer options menu

Integrated Modbus communication

Optional remote sensor(s) available

Occupancy input

Optional doorstation input

Door Bell function


Price D.G.



RS-1Room temperature sensor23,63C
RS-WWireless temp sensor
OC-3D Occupancy module 106,31 C
SMT-PIR Occupancy sensor 61.43 C
H-243  Outdoor station  102,38  C 
VSXThermal valves

Read more
SMT-AZC VAV controller with Modbus RTU


The SMT-AZC Zobe VAV controller is special designed to control the air flow in a single zone. The Controller is profided with a upstream mounted flow sensor. 

Easy to install

The SMT-AZC is easy to install.Based on the same housing as the unique SMT-770 Chameleon the controller has his connections on the backplate of the housing. Our engineers have developed a easy to use menu with password protection.

Energy saving

The SMT-AZC is developed with high comfort and energy savings in mind! Unique with the SMT-AZC is the Modbus communication witch will provide the building managment system with the needed information to be able to control based on request!


- Large Backlit liquid Crystal display

- VAV control of single zone

- Temperature controlled

- 24Vac powered

- Incl. upstream flow sensor

- Modbus RTU

- Easy installation


Price D.G.



SMT880 Falcon Unique Touch screen comfort controller

Finding the right HVAC controlis often not an easy task. Modern consumers expect an attractive and easy to use thermostat featuring all the modern features. The SMT880 Falcon features a full colour 5"touch screen waith a modern interface and attractive icons. Tapping icons open pages that permits the adjustment of comfort levels, system modes and holiday scheduling that are all laid out in an attractive and intuitive format. The Falcon is that easy to use that the user should never need read the manual or call tech support for help using their Falcon.

The capabilities of the Falcon does not stop with a fancy userinterface. The Falcon can easily be expanded to include individual temperature control for up to 9 zones by simply addition of the zone control module.

The controller can be fitted with up to a maximum of 4 wall units.A change made on any one of the wal units will automatically synchronize, updating information to the other wall units.

Each wall unit has the ability to turn zones or the HVAC system On or Off or adjust individual zone temperatures. With the Falcon when using multiple wall units you can adjust in every zone the comfort level.

Also the SMT880 can be controlled by smartphone or tablet, simply by connecting the controller to the ethernet or adding the WIFI  modules. Especcially for smartphone or tablet control SMart temp has developed a easy to use App.


Large 5"full coulour Capacitive Touch screen

Up to 9 temperature controlled zones

Ful Scheduling for each zone

Iphone, Android and web page control

Rh & temperature monitoring & control

Single or 3 speed fan conctrol

Heatpump or heat cool control logic

0..10Vdc Valve control

Photo frame function

Light sensor for automatic backlight control

optional with pressure control possibility's

SMT-880     840,00 C
Falcon WIFI   295,00 C
Falcon zone module   275,00 C
Falcon touch panal   650,00 C
RS-1 Room sensor   23,63 C
V.X thermal valves   Read more    
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Rüster Product News

Flush mounted I/O module with Modbus RTU communication protocol. The unique and compact RBC-I/O is especcially designed to meet the wishes of our customers for a compact contol module witch can switch lightning , sun blinds etc.

For more information about this new unique product, contact our sales department!

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Rüster News


Rüster is proud to inform you that our industrial resistance thermometers and thermocouples are now available with GL certification

GL certification is especially needed when used in Maritime environment

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Rüster Worldwide

We deliver Worldwide!

Ask our sales department about your possibility's!

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