Pressure switchesS4412 and S4415 vacuum switches convert vacuum from -0.85 bar to -0.15 bar into an electrical switching signal. They use a membrane and are available in multiple configurations. A ¼-in. screwed fitting made of zinc-coated steel is standard. Electrical connection for the S4415, which features a tab connector, can be protected by using a cap. S4412 has a 90° connector. They can be used in normally closed, normally open, or changeover mode. Switching point can be easily adjusted with a screw.

tecsis LP, Worthington, OH, (614) 430-0683, www.tecsis.us