If you have any questions related to Nortek instruments, please search our support site, FAQ section or manuals for topics related to your query. If you can't find any answers here, please send us an e-mail at support@nortekgroup.com or submit your request through our web interface. We will get back to you shortly and make sure your question is covered in our technical documentation. If you have a question where you would like input from other Nortek instrument users, please feel free to add your questions to the community here.