Hi genius. I am making overheating mail alarm system. I use thermocouple wire. For CJC, I will just input 20℃. And I use Arduino uno, Ethernet Shield and RJ45 for supply energy and sending data. To give IP, I choose W5100. Of course, I will make op amp for multiply input signal from thermocouple. And I will use low pass filter for remove noise.
Arduino uno, Ethernet Shield, RJ45, W5100, Op amp, low pass filter, thermocouple.
Is these perfect to make mail alarm system.