OIL HEATERS RO-405 - RO-803
![Oelvorwärmer RO-804/00_1606](https://energotech.ch/697-home_default/oil-heaters-ro-804-00.jpg)
350W and 700W oil sump contact heaters that prevent the oil temperature from falling below a certain value. This value is maintained by the internal thermosta
350W and 700W oil sump contact heaters that prevent the oil temperature from falling below a certain value. This value is maintained by the internal thermosta