REVELTRONICS UTCOMP-3, User & Assembly Manual, Page: 13 / 53

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2.3. Pinout description
GROUP DESCRIPTION
Battery A12 (-), A24 (+) power supply for the device, safe range is +8V...+32V DC (0,6A fuse is built-in in UTCOMP module)
Ignition (A23) positive voltage from ignition switch (0V - low state, 5V and more - high state) - wake up UTCOMP from sleep mode
SW... output for the three-button keypad (monostable switches, p5V from UTCOMP, press button shorts to GND)
DS18B20... output for digital temperature sensors (3 wires for each sensor) – keep out for power supply! – reverse connection VCC/GND can damage sensor
Buzzer... pinout for buzzer (VCC = +5V OUT)
Adc... input voltage signal from analog sensors, e.g. lambda o2 sensor, wideband o2 controller, pressure sensors, temperature sensor (NTC), TPS etc.
AdcVcc... input for resistance sensors (pull-up to +5V from UTCOMP), e.g. temperature sensor (NTC), resistance pressure sensors etc.
DigInFc1 (A10) input injector control signal (PWM 0V… +12V, or 0V….+5V) or fuel consumption signal (PWM/FREQ)
DigInFc2 (A11) input signal from the LPG system (e.g. status LED indicator or electrovalve: 0V (OFF) – 3…12V (ON) – lpg) or RPM signal from hall sensor
DigInHC (A21) input signal from headlights or fan cooler relay: +12V (ON), 0V (OFF)
DigInUser (B1) user input signal, e.g. RPM signal from hall sensor
DigOutUser (B7) user output signal, e.g. relay 5V@100mA control
VSS (A22) input signal from vehicle speed sensor - VSS (0V – low state, 5V and more – high state)