This is a brand new Nortek switch. The Nortek 632571R Pressure Switch activates or deactivates the unit based on pressure changes to maintain proper functionality. Using real OEM buttons and switches gives you the reliability and functionality needed to keep your heating and cooling system running optimally Pressure Range: -1.30 PF Product Type: Pressure Switch I take pride in my pictures, and are a valuable extension of my description. Please take time to see the product fully. Buy with confidence! All items are packaged with great care and shipped next day, excluding any weekends and holidays. I will combine shipping whenever possible as long as the products can be safely packed together. Please remember to leave feedback, it helps to keep good sellers . International Buyers: We do not mark merchandise as a gift or below value due to it being against US and International Regulations. All custom fees and duties are the responsibility of the buyer. Seller is not responsible for any package held by Customs. If returns are accepted. Must be returned in the same condition as received and in same or similar packaging.