The Pro Control range from Stack offers so much more than a conventional gauge. They give the user total control and awareness of critical engine functions. By using Stack's precision stepper motor for needle movement and solid state sensors, accuracy is better than 2% with the reliability you would expect from a high quality product such as this.User configurable full dial colour change alarm warningFast, smooth and accurate stepper motor needle drivePeak value tell tale memoryConfigurable back light colour with 7 different colour options0-5V output for ECU or data loggersOutputs to trigger audible alarms or other electrical circuits52mm gauge diameterFeatures of the Pro Control Battery Voltage Gauge include:Full Dial Alarm Warning - User configurable minimum and maximum voltage parameters can be set along with one of 7 different warning colours assigned to each parameter. For example, if a voltage level is set at 10 volts, then if the gauge reads below 10 volts the dial face changes