Oil boiler control. Multi-function plastic housing with a 1-pole capillary control.
- Suitable for surface mounted, immersion and air applications
- Multiple mounting configurations
- Includes GTL series control with changeover contact
- Control knob with temperature indication
- Knob rotation customizable with stops
- Customized colors and marking available
A rise in temperature causes the expansion of liquid within the bulb and capillary. The liquid acts on a bellows assembly within the plastic housing to open and close electrical contacts.