I just got this unit today, installed, mounted and connected it. The temp probe is in and working fine displaying correct date and time and temp on the display screen. My question is with the PC 4 plug unit. I want to do 2 things...plug my 2 300w heaters in and have them come on and off according to temps i set. The second thing is plug my 2 250w metal halide lights into it and have them come on and off at certain times. Questions are what plugs to I use for the heaters and what plugs do I use for the lights? Does it matter? Also where do you program this stuff...? One more question is....with the RKL 1 can I have the lights shut off if a temp gets too high and then come on again in like 45 minutes? Thanks!