Major Project: Dual Sensors with Multiple Warnings - pics & video

Here are some pics of my Arduino-based dual-sensor monitoring device.
From the top:
*Below lower set-limit warning (flashing blue LED)
*Approaching set-limits warning
(flashing green LED)
*Above upper set-limit warning
(flashing red LED)
*Within set-limits - no warnings


And here's a video of the Monitor in action..