McNeil Controls is a full-service systems integrator. They work take programmable logic controllers, together with all the equipment in a client's plant and interface with a graphics package to provide a central control system that the client's personnel can use to monitor and control their refrigeration equipment. McNeil Controls can custom create a complete system controls solution. The company has many years of food plant experience; specifically, ammonia refrigeration and critical process air handling. The company offers electrical wiring diagrams and layouts, panel construction, PLC programming and HMI interfaces.