{"product_id":"model-2121-pressure-switch-90-120-psi-1-4-npt","title":"Model 2121: Sealed Tank Mount Pressure Switch - 1\/4\" NPT (90 psi On \/ 120 psi Off)","description":"\u003ch3 style=\"font-family: 'Open Sans Condensed', sans-serif; font-weight: bold; text-transform: uppercase;\"\u003eModel 2121: Sealed Tank Mount Pressure Switch - 1\/4\" NPT (90–120 PSI)\u003c\/h3\u003e\n\u003cdiv style=\"font-family: 'Roboto Condensed', sans-serif; font-size: 12px; line-height: 1.5; color: #333;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; text-transform: uppercase; margin-bottom: 8px;\"\u003eAutomated Precision\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 15px;\"\u003eThe Kleinn Model 2121 is the heavy-duty \"brain\" of your air management. It takes absolute control, automatically signaling your compressor to kick ON when levels drop and OFF before exceeding safe limits. Engineered specifically for Kleinn 120 PSI Systems, it features a fully sealed housing and heavy-duty 12-gauge wires to thrive in the most extreme environments.\u003c\/p\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; text-transform: uppercase; margin-bottom: 8px;\"\u003eCritical Safety Architecture\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 15px;\"\u003eNever compromise your rig. For maximum performance and total system protection, the 2151 MUST be paired with a 40-amp relay (Model 340) and a safety relief valve (Model 52145).\u003c\/p\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; text-transform: uppercase; margin-bottom: 8px;\"\u003eFailsafe Design\u003c\/div\u003e\n\u003cp\u003eThis essential combination maintains strict pressure limits. If the switch eventually wears, the safety relief valve acts as your early warning system—Model 52145. If you hear the safety valve releasing repeated, high-pressure blasts of air, it is a definitive signal that your pressure switch has failed to cut off power that feeds the compressor. This alert tells you to immediately disconnect power to the compressor and replace the pressure switch before system damage occurs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"background-color: #f2f2f2; border-left: 10px solid #c00000; border-radius: 15px; padding: 25px; font-family: 'Roboto Condensed', sans-serif; font-size: 13px; color: #000000; line-height: 1.5;\"\u003e\n\u003ch3 style=\"font-family: 'Open Sans Condensed', sans-serif; color: #c00000; margin-top: 0; text-transform: uppercase; font-weight: bold; font-size: 24px;\"\u003eWhy choose the 2121?\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px;\"\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003ePRECISION-TUNED CALIBRATION:\u003c\/strong\u003e Engineered to kick in at 90 PSI and cut out at 120 PSI. This ensures your tank is always primed for massive air horn blasts.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eBATTLE-READY SEALED DESIGN:\u003c\/strong\u003e The fully sealed housing slams the door on moisture, dust, and road debris, making it the only choice for rugged under-vehicle mounting.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eERROR-PROOF WIRING:\u003c\/strong\u003e With non-polarized leads, there is no \"wrong\" way to wire it—meaning faster installs and zero risk of wiring-induced failures.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eTOTAL SYSTEM FORTIFICATION:\u003c\/strong\u003e Designed to command a 12V ignition signal to a 40-amp relay, shielding your compressor from electrical burnout and maximizing its lifespan.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"background-color: #f2f2f2; border-left: 10px solid #c00000; border-radius: 15px; padding: 25px; font-family: 'Roboto Condensed', sans-serif; font-size: 13px; color: #000000; line-height: 1.5;\"\u003e\n\u003ch3 style=\"font-family: 'Open Sans Condensed', sans-serif; color: #c00000; margin-top: 0; text-transform: uppercase; font-weight: bold; font-size: 24px;\"\u003e⚠️ Model 2121 Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis \u003cstrong\u003epressure switch\u003c\/strong\u003e is specifically designed for use with \u003cstrong\u003eKleinn 120 PSI systems.\u003c\/strong\u003e To ensure the \u003cstrong\u003eperfect fit\u003c\/strong\u003e for \u003cstrong\u003eyour application\u003c\/strong\u003e, match the \u003cstrong\u003epressure switch\u003c\/strong\u003e to the \u003cstrong\u003e120 PSI Rating of your compressor.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKleinn Air Systems compatible with the 2121:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 6260:\u003c\/strong\u003e 120 PSI | 10% Duty Cycle | \u003cstrong\u003eUltra Light-Duty\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKleinn Systems compatible with the 2121:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal ProBlaster™ Horn Kits:\u003c\/strong\u003e Models \u003cspan style=\"color: #c00000;\"\u003e\u003cstrong\u003eHK1, HK2, HK2-1\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle-Specific Kits:\u003c\/strong\u003e \u003cspan style=\"color: #c00000;\"\u003e\u003cstrong\u003eJEEPKIT-1, TJ102\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"background-color: #f2f2f2; border-left: 10px solid #c00000; border-radius: 15px; padding: 25px; font-family: 'Roboto Condensed', sans-serif; font-size: 13px; color: #000000; line-height: 1.5;\"\u003e\n\u003ch3 style=\"font-family: 'Open Sans Condensed', sans-serif; color: #c00000; margin-top: 0; text-transform: uppercase; font-weight: bold; font-size: 24px;\"\u003eWhat's included?\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px;\"\u003e\n\u003cli\u003e(1) Model 2121 Sealed Tank-Mount Pressure Switch\u003c\/li\u003e\n\u003cli\u003e(2) Heavy-Duty 12-Gauge Non-Polarized Wire Leads\u003c\/li\u003e\n\u003cli\u003e(1) 1\/4\" NPT Male Fitting (Pre-applied Thread Sealant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"background-color: #f2f2f2; border-left: 10px solid #c00000; border-radius: 15px; padding: 25px; font-family: 'Roboto Condensed', sans-serif; font-size: 13px; color: #000000; line-height: 1.5; margin-bottom: 25px;\"\u003e\n\u003ch3 style=\"font-family: 'Open Sans Condensed', sans-serif; color: #c00000; margin-top: 0; text-transform: uppercase; font-weight: bold; font-size: 24px;\"\u003e⚠️ Pro Installation Tip: Relay Protection\u003c\/h3\u003e\n\u003cp style=\"font-size: 15px; font-weight: bold;\"\u003eSHIELD YOUR INVESTMENT\u003c\/p\u003e\n\u003cp\u003eFor maximum reliability and long-term performance, power this switch via \u003cstrong\u003ean ignition source of 10+ amps\u003c\/strong\u003e. This \u003cstrong\u003eMUST\u003c\/strong\u003e be used in conjunction with a \u003cstrong\u003e30\/40 amp\u003c\/strong\u003e relay (like the \u003cstrong\u003eKleinn Model 340\u003c\/strong\u003e) to shield internal contacts from high-amperage surges during compressor startup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f2f2f2; border-left: 10px solid #c00000; border-radius: 15px; padding: 25px; font-family: 'Roboto Condensed', sans-serif; font-size: 13px; color: #000000; line-height: 1.5;\"\u003e\n\u003ch3 style=\"font-family: 'Open Sans Condensed', sans-serif; color: #c00000; margin-top: 0; text-transform: uppercase; font-weight: bold; font-size: 24px;\"\u003e⚠️ Critical Maintenance Tip: Fight Corrosion\u003c\/h3\u003e\n\u003cp style=\"font-size: 15px; font-weight: bold;\"\u003eDON'T LET MOISTURE KILL YOUR SYSTEM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePressure switches\u003c\/strong\u003e are high-performance \u003cstrong\u003ewear items.\u003c\/strong\u003e To \u003cstrong\u003emaximize longevity\u003c\/strong\u003e, use the \u003cstrong\u003eKleinn Snorkel Air Filter Relocation Kit included with all of our air compressors.\u003c\/strong\u003e By \u003cstrong\u003erouting your air intake inside the vehicle cab\u003c\/strong\u003e, you significantly reduce moisture intake and effectively \u003cstrong\u003edouble the service life\u003c\/strong\u003e of your \u003cstrong\u003epressure switch.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #ccc; margin: 20px 0;\"\u003e\n\u003cp style=\"font-family: 'Roboto Condensed', sans-serif; font-size: 14px; font-weight: bold; text-decoration: underline;\"\u003ePressure Switch Specifications\u003c\/p\u003e\n\u003ctable cellpadding=\"8\" style=\"width: 565pt; border-collapse: collapse; font-family: 'Roboto Condensed', sans-serif; font-size: 13px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: black; color: white;\"\u003e\n\u003cth style=\"text-align: left; border: 1px solid #333;\" colspan=\"2\"\u003e2121 Pressure Switch Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #d9d9d9;\"\u003e\n\u003ctd style=\"border: 1px solid #333; width: 45%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003eModel 2121\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e1-Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #d9d9d9;\"\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003ePressure On \/ Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e90 PSI On \/ 120 PSI Off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003eTwo 12-Gauge non-polarized leads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #d1d1d1;\"\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003eSafety Valve Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003eUse Model 52145\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003eTank Fitting Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e1\/4\" M NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #d1d1d1;\"\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003eSealed Design for Moisture Resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003e\u003cstrong\u003eCompatible Relay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #333;\"\u003eModel 340 40-amp SPDT 12v Auto Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Kleinn","offers":[{"title":"Default Title","offer_id":44387295461538,"sku":"KL 2121","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3719\/3890\/files\/model-2121-pressure-switch-kleinn-kl-2121-349409.jpg?v=1724978120","url":"https:\/\/kleinn.com\/products\/model-2121-pressure-switch-90-120-psi-1-4-npt","provider":"Kleinn Automotive Accessories","version":"1.0","type":"link"}