normally open air switch for sale, brand-new and used.

Marquardt Foot Switch This is a good quality foot switch made by Marquardt. It was salvaged from an old Philips Electron Microscope built around 1980. The base is 6.9 cm by 12 cm.

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Pyronics / Selas Air or Fuel Gas Pressure Switch PS-O .2"-2" WC Estimated Retail Price - $635.00 This is a Model PS-O

Series 1640 Floating Contact Null Switch for High and Low Actuation Visual Set Point Adjustment...Adjustable Null Zone The unique electric switch design in the 1640 is another Dwyer Instruments, Inc. innovation. The Dwyer Model 1640 Differential Pressure Switch resembles the Series 1630 switches described on the previous page.

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1PCS ak47 220V 1CH Radio Wireless Remote Control Switch light lamp LED ON OFF 433MHZ RF receiver with