WATER HEATERΚΑΥΣΤΗΡΕΣ WEBASTOΑΝΤΑΛΛΑΚΤΙΚΑProgrammable "relay" for fan speed control. Installed on cars with climate control. The setting is made using the Webasto Thermo Test diagnostic program. It is possible to set PWM (PWM) signal parameters with high resolution. Frequency, duty cycle, ..