Clock-controlled, electronic room thermostat


Model: HTRRBu-110.121/21 Item No: MA 600301
Equipment: Room temperature controller with clock: simple operation by dedicated function keys, for “ON/OFF”, holiday mode, party mode, the setting of the desired operating mode and for information pertaining to all actual settings. Temperature setting knob with °C scale, self-adapting function (can be deactivated), backlight. PG: I


For the time-dependent control of temperatures in closed rooms. Suited for all kinds of heating systems. Valve: normally closed type. The device can also be used as the main controller that enables to trigger the temperature decrease operations of other controllers

Technical Data  
Operating Voltage: 230 v ~, 50 Hz
Sensor: NTC, internal
Switching Capacity: 8 (2) A/230 V ~
Switching Contact: Relay/make contact
Setting Ranges: 5…30°C (scale in °C)
Switching Difference: < 1 K
Temperature Decrease: Adjustable 5…29°C 

(factory setting 17°C)

Degree of Protection: IP 30
Protection Class: II, after installation 

At 24 V ~ protection class III

General Equipment: Mechanical range reduction, 

Summer-/wintertime changeover

Child protection/valve protection

Indications: Symbol display with 9 function 

Keys/°C or °F (Fahrenheit)

Power Reserve: Approx. 4 days
Admissible Air Moisture: Max. 95% r.h., non-condensing
Storage Temperature: -20…+70°C
Safety and EMC: Acc. to DIN EN 6073.
Ambient Temperature: 0…30°C
Housing Colour: Pure white, similar to RAL 9010
Housing Material: Plastic (ABS)