Room thermostat Bosch TR 12 7719002144. The Bosch TR 12 mechanical room regulator is used for on-off regulation of the burner flame and control of the circulation pump. The Bosch TR 12 mechanical room regulator is used for on-off regulation of the burner flame and control of the circulation pump. Compatible with wall mounted gas boilers Bosch Gaz 3000 W, Gaz 4000 W, Gaz 6000 W.
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