Sensitive Freezer Alarm with Buzzer

Here is a simple freezer alarm circuit, but ultra sensitive with a buzzer. The circuit raises an audio alert when the temperature inside the freezer box

WJL-6000S is a corona HVAC leak detector with high sensitivity and visualized alarm display. Its adjustable sensitivity ensures automatic and optimal detection status, locating leaks much more accurately. It detects all halogen refrigerants including R134a, R410a, R12, R22, R600a, R404a, R1234yf.

Elitech Wjl-6000s Freon HVAC Halogen Refrigerant Leak Detector R22 R410A R134a R1234yf AC Sniffer

Sensitive Freezer Alarm with Buzzer

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