Use this circuit to detect temperature changes between -55 to 125 C
The alarm will warn you when temperature is higher or lower than your setting.
FEATURES: Power supply : 12VDC 70mA.
This circuit can drive our seven segment LED displays up to 10 inches.
Set the alarm at high or low temperature.
Temperature range: -55 to 125 C.
PCB dimensions : 2.64x4.08 in.
CONNECTING: 12V point is used for connect the power supply 12VAC.
1-4 point are used to connect the common point of big display
in each digit.
a,b,c,d,e,f,g,pt point are used to connect the segment point of
big display in each digit
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