The GO Switch Model AV-35S includes the 35-13319M leverless limit switch plus two mounting screws. The GO Switch Model 35 has set the standard for reliable performance in valve position monitors. Not available in the original SPDT copper body or the DPDT stainless steel "Z" switch.BenefitsRugged copper housing withstands physical abuse, moisture and corrosivesSeesaw armature provides snap action and solid contact pressure, eliminating 'contact teasing' and 'contact chatter' in high vibration applicationsHermetically sealed contacts enable switchbox wiring in Div 2 areas with no seal-off requiredOne model does it all-AC, DC, N/O, N/C, high current or low currentSnap-action response and low hysteresis provide precision position feedbackNo lever arms, cams, or springs to wear, break or failRFI immune, consumes no power to operate, and has no current leakage or voltage dropNot susceptible to contact chatter, bounce, or welding*Replacement for GO Switch 35-13319M.