The Aquametrix AM-2252 Dual Input Controller monitors and controls up to 2 parameters simultaneously. pH, ORP, Conductivity, and flow are supported and two new input options have been added; ISE and 4-20mA support. The AM-2252 provides control of external devices using its five independent control and alarm relays. Each relay has adjustable high, low, and in range set-points, cycle timer with adjustable on and off times. This feature enables tighter control of batch processes by eliminating chemical overshoot. All relays can be activated by temperature or flow totalizer reading as well. The fifth relay can be common for multiple parameters.