My question involves the BB reagent refrigerator. It is my understanding, correct me if I am wrong, that the BB reagent refrig must have an alram system. I have a small reagent refrig and the external temp monitoring/alarm device is quite worthless. What are some suggestions. This one has a small bottle to sit inside the fridge and a wire comes outside and plugs into a temp/alarm device that is attached on the outside of the door. It is a portable alarm system from Cardinal Health. Any reccomendations?