The RTM-03 temperature controller is used to control receivers (e.g. radiators, floor heating) depending on the temperature in the environment of the external NTC sensor. The device has the ability to adjust the set temperature using a potentiometer on the front panel in the range -10? C ÷ +90? C. Using the second potentiometer, it is possible to select one of 10 hysteresis values ??with which the controller is to operate (from 0.25° C to 2.5° C). For proper operation, the device requires connecting an external NTC-03 probe. The probe is not included with the regulator and must be purchased separately. The probe cable is 3 m long and can be extended to 50 m with a 0.2 ÷ 2.50 mm2 cross section. Probes cannot be couples with each other.