889 744 41 is a 4 digit reference code for a Crouzet limit switch. The switch is used for controlling mechanical devices, such as motor and pumps, according to various conditions. The switch features a variety of features and functions, including an SPDT or DPDT output, adjustable trip points, a choice of manual or automatic reset, and adjustable or non-adjustable stop points. The switch can also be used for thermal overload protection.