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Run PWM as an On/Off Switch By selecting this option the PWM output is forced active (0V, grounded) as soon as the calculated PWM value is above 50%. The function of the output then resembles an on/off switch. It can be used to turn on/off lamps, relays etc. Example Set the entire PWM Load table to 100% (no load influence) Set the PWM RPM table at 0% up to 6500 rpm and at 100% above this rpm. This results in PWM_Out is off up to 6500 rpm, and on above 6500rpm. If you connect a lamp between 12V and PWM_Out you now have an rpm-indicator lamp. PWM1 RPM The value 0-100% determines the PWM signals duty cycle in percentage depending on rpm. If you choose to control a boost control valve, then every PWM-value corresponds to a specific boost. The boost for the different values differs and needs testing to be determined. Page 48