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The freezer temperature monitor keeps a track record of the temperature and alerts you when temperatures rise to unsafe levels in your freezer. It will warn you of potential vaccine, medicine, or food spoilage and protect your inventory 24/7. Get reliable freezer temperature monitor and other products at www.e2di.com. -

HID stands for high-intensity discharge, a technical term for the electric arc that produces the light. The high intensity of the arc comes from metallic salts that are vapourised within the arc chamb. -