Product monitoring device

An apparatus comprising a monitoring device, the monitoring device comprising a first position sensor and a second position sensor disposed within a single housing configured to be disposed between a first roller and a second roller, at least one processor, and at least one non-transitory memory including computer program code instructions, the computer program code instructions configured to, when executed, cause the apparatus to:

• receive a first roller first position distance between a first position sensor and an exterior edge of the first roller;
• receive a second roller first position distance between a second position sensor and an exterior edge of the second roller;
• compare the first roller first position distance with a first predetermined position distance, wherein the first predetermined position distance defines the distance between the first position sensor and the exterior edge of the first roller at a specific amount of product left on the first roller;
• compare the second roller first position distance with a second predetermined position distance, wherein the second predetermined position distance defines the distance between the second position sensor and the exterior edge of the second roller at a specific amount of product left on the second roller;
• based on the comparison of the first roller first position distance and the first predetermined position distance, determine the amount of product left on the first roller;
• based on the comparison of the second roller first position distance and the second predetermined position distance, determine the amount of product left on the second roller;
• and
• cause the transmission of a signal relating to the amount of product left on the first roller and the second roller.