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REV: 04-29-25 LF <br />MECHANICAL SIREN INTERLOCK <br />The siren shall only be active when master warning switch is on to prevent accidental <br />engagement. <br />BACK-UP ALARM <br />An ECCO model 575 backup alarm shall be installed at the rear of the chassis with an output <br />level of 107 dB. The alarm shall automatically activate when the transmission is placed in reverse. <br />INSTRUMENTATION <br />An Innovative Controls Digital Instrument Cluster (DIC) shall be provided that combines gauges, <br />telltales, warning messages, and advanced diagnostic capabilities into a single 12.8-inch digital <br />display. The display screen shall have an anti-reflective coating and include touch screen and <br />mechanical button user interaction with the display as well as video and audio interfaces. <br />The DIC shall include a vehicle odometer which displays the total vehicle distance traveled. The <br />DIC shall also include two vehicle trip odometers (TRIP A and TRIP B) which indicate the distance <br />traveled and average fuel economy for each respective trip. The operator may select which <br />odometer is displayed and may reset either trip odometer through the on-screen display. The DIC <br />shall include an engine hour meter which displays the total engine hours of operation. <br />The gauges shall have high-contrast white scales with orange pointers. The following gauges <br />shall be included on the display: <br />•Speedometer that indicates vehicle speed. The scale on the speedometer shall read from 0 <br />to 100 MPH. A numerical display of vehicle speed shall also be shown on the gauge. <br />•Tachometer that indicates engine speed. The scale of the tachometer shall read from 0 to <br />3000 RPM. <br />•Primary and secondary air pressure gauges shall indicate the pressure in the primary and <br />secondary air systems. The scale of the air pressure gauges shall read from 0 to 160 pounds <br />per square inch (PSI). The gauge icon and scale shall turn amber when the system pressure <br />drops below 70 PSI. The icon and scale shall turn red when the system pressure drops below <br />62 PSI. An audible alarm shall also sound when air pressure is low. <br />•Fuel gauge. The fuel gauge shall read from empty to full as a fraction of full tank capacity. <br />The gauge icon and scale shall turn amber when the fuel level is below 1/8th tank capacity <br />(1/4th tank in pump mode). An audible alarm shall also sound with low fuel level. <br />•Diesel exhaust fluid (DEF) gauge. The DEF gauge shall read from empty to full as a fraction <br />of full tank capacity. The gauge icon and scale shall turn amber, and an audible alarm shall <br />sound to indicate low DEF level. <br />•Engine oil pressure gauge. The scale of the engine oil pressure gauge shall read from 0 to <br />100 PSI. The gauge icon and scale shall turn red, and an audible alarm shall sound to indicate <br />low oil pressure. <br />•Engine coolant temperature gauge. The scale of the coolant temperature shall read from 100 <br />to 250 degrees Fahrenheit (°F). The gauge icon and scale shall turn red, and an audible alarm <br />shall sound to indicate high coolant temperature. <br />•Voltmeter indicating chassis system voltage. The scale of the voltmeter shall be from 10 to <br />18 volts. The gauge icon and scale shall turn red, and an audible alarm shall sound when the <br />system voltage drops below 11.8 volts for more than 120 seconds in accordance with the <br />ATTY/AGR.2025.089/Fire Apparatus Solutions (Purchase of Spartan-LTC 105' TDA) (Page 78 of 150)