Specifications include, but are not limited to:. Controller Specification 1. General: Supply a color touchscreen, microprocessor-based, multiple loop, expandable, configurable loop controller suitable for flush, or subplate, mounting. Controller I/O shall include at least: (3) 4-20mA/0-5 VDC AIN, (2) 4-20mA AOUT, (5) 120Vac DIN, (4) 24 VDC DOUT, and (2) 8A SPDT ROUT. In addition, controller shall have at least (2) I/O expansion board slots. Any I/O expansion board type can be used in any slot. I/O expansion boards types with the following I/O channel mixes shall be available, as a minimum: (5) AIN, (3) AIN + (2) AOUT, (4) DIN + (2) ROUT. Plug-in field wiring shall allow removal of the controller circuit boards without disconnecting any panel or field wiring from the terminal strips. Controller shall be powered by 24 Vdc, and shall be able to be powered by dual redundant 24 Vdc supplies. Controller shall be able to operate indefinitely in 125° F ambient temperatures with no cooling fans.