Specifications include, but are not limited to: Building 1 - CNG and Electric Buses north of Rosa Parks Way (Qty 1) E³Point Base, Wall Mount, Analog, 24VAC/VDC, Standalone (Qty 1) E3Point CO Cartridge for base (Qty 1) E³Point Remote Sensor, Nitrogen dioxide (NO2) Control wiring to interlock into the existing exhaust fan starters, and makeup air unit. Building 2 – Bus Parking south of Rosa Parks Way (Qty 2) E³Point Base, Wall Mount, Analog, 24VAC/VDC, Standalone (Qty 2) E3Point CO Cartridge for base (Qty 2) E³Point Remote Sensor, Nitrogen dioxide (NO2) Control wiring to interlock into the existing exhaust fan starters, and makeup air unit. Building 3 – Arched roof corner of 8th & J (Qty 1) E³Point Base, Wall Mount, Analog, 24VAC/VDC, Standalone (Qty 1) E3Point CO Cartridge for base (Qty 1) E³Point Remote Sensor, Nitrogen dioxide (NO2) Control wiring to interlock into the existing exhaust fan starters, and makeup air unit. Building 4 – Corner of 7th & J (Qty 4) E³Point Base, Wall Mount, Analog, 24VAC/VDC, Standalone (Qty 4) E3Point CO Cartridge for base (Qty 4) E³Point Remote Sensor, Nitrogen dioxide (NO2) Control wiring to interlock into the existing exhaust fan starters, and makeup air unit.