Abstract: A countertop appliance comprises interchangeable containers including a first container and a second container each having a base. The first container includes a first magnet coupled to the base of the first container at a first distance and the second container includes a second magnet coupled to the base of the second container at a second distance. A housing includes a motor and an attachment portion. The interchangeable containers are selectively and operably coupled to the attachment portion of the housing. An analog magnetic sensor is disposed proximate the attachment portion of the housing. The analog magnetic sensor is configured to detect the first magnet at the first distance and the second magnet at the second distance. A controller communicatively coupled with the analog magnetic sensor is configured to identify one of the interchangeable containers based on the detected distance of one of the first magnet and the second magnet.