The T8800 from GRI is a single sensor programmable temperature monitoring security device. The T8800
has only one on-board sensor. The T8800R has a single remote probe that is submersible in liquid or can be installed in a freezer. C form relay output. The memory in the T8800 is non-volatile because all temp trip limits are
set with a small screw driver. No typical software program is required. Simple to set.