• Proportional regulation
• Control signal 4-20mA or 2-10V

The controller is designed for smooth regulation of receiver power. It changes the value of the output voltage in proportion to the 4-20mA control signal supplied from e.g. a temperature controller or a setting unit. This is achieved by delaying the switching on of the sinusoidal conduction by the appropriate phase angle:

It is mainly used in heating systems where high accuracy of temperature control is required. Other uses:

• lighting adjustment
• speed adjustment

The relay is attached to a mounting plate or heat sink. The plastic, transparent cover included in the set ensures protection of the terminals IP20.