Technologies and electronic assembly techniques.
Semiconductor coolers are solid Cstate, vibration Cfree, noise-free heat pupms. 
They are modular devices,So are simple to install and operate. 
Since they consit primarily of semiconductor material sandwiched between ceramic plates and have no moving parts, 
They are inherently reliable.
Type Number: TEC1-12706
Couples: 127
Umax (V): 15.2
I max(A): 6
ΔTmax(degree Celsius): 67
Dimensions(mm): 40 X 40 X 3.4
Ohm:1.3 - 1.5