Check the listing for details. Operation & Maintenance Manual model 232 Temperature controller. Condition: Used, Made in United States. Listed at 9.99 USD. The Operation & Maintenance Manual for the model 232 Temperature controller is a crucial document that provides detailed instructions on how to properly operate and maintain this precision tool. This manual is essential for ensuring optimal performance and longevity of the temperature controller, making it a valuable resource for business and industrial professionals who rely on accurate temperature readings. With clear steps and guidelines, this manual helps users understand the functionality and proper usage of the model 232, helping to streamline operations and minimize potential issues.