{"product_id":"johnson-controls-a99bb-25c-ptc-silicon-temperature-sensor","title":"Johnson Controls a99bb-25c Ptc Silicon Temperature Sensor","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe JOHNSON CONTROLS a99bb-25c is a PTC (positive temperature coefficient) silicon temperature sensor designed for use with compatible Johnson Controls controllers and building automation systems. It features a PVC-jacketed cable measuring 9.75 inches in length and delivers a sensor range of -40 degrees F to 248 degrees F, covering a wide span of operating conditions. The sensor presents a resistance of 1,035 ohms at 25 degrees C (77 degrees F), a standard A99 PTC characteristic used for accurate temperature input signal conditioning. This sensor is typically installed by licensed HVAC technicians and building controls specialists working on commercial or light commercial HVAC control applications.\u003c\/p\u003e\n\u003cp\u003eThe a99bb-25c is suited for installation in HVAC systems where temperature sensing is required as an input to a compatible controller, such as the C450 series supply power module. It is appropriate for duct, space, or equipment-surface sensing applications where the -40 degrees F to 248 degrees F measurement range matches the process conditions. The 9.75-inch cable length provides enough reach for typical sensor mounting in duct or equipment enclosure installations without requiring additional extension wiring in standard configurations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePTC silicon sensing element with standard A99 resistance curve: 1,035 ohms at 25 degrees C (77 degrees F)\u003c\/li\u003e\n  \u003cli\u003eWide temperature sensing range: -40 degrees F to 248 degrees F\u003c\/li\u003e\n  \u003cli\u003ePVC-jacketed cable at 9.75 inches for flexible mounting in duct or equipment applications\u003c\/li\u003e\n  \u003cli\u003eCompatible input signal type for Johnson Controls C450 series controllers\u003c\/li\u003e\n  \u003cli\u003eUL listed under File E27734; FCC and Industry Canada compliant; CE marked\u003c\/li\u003e\n  \u003cli\u003e3-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Johnson Controls C450 series supply power module controllers, including models accepting the A99 PTC temperature sensor input signal (1,035 ohms at 25 degrees C). Verify controller model compatibility before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified HVAC technician or building controls specialist. Power down the controller and related equipment before connecting or disconnecting the sensor. Ensure the sensor cable routing avoids sharp edges, excessive heat sources, or pinch points that could damage the PVC jacket. Follow applicable local codes and the controller manufacturer wiring guidelines when terminating sensor leads.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor Type\u003c\/strong\u003e: PTC Silicon\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor Range\u003c\/strong\u003e: -40 degrees F to 248 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResistance at 25 degrees C (77 degrees F)\u003c\/strong\u003e: 1,035 ohms (A99 PTC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Material\u003c\/strong\u003e: PVC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Length\u003c\/strong\u003e: 9.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: UL File E27734, FCC CFR47 Part 15 Subpart B Class B, Industry Canada ICES-003 Class B, CE, RoHS, WEEE, C-Tick (N1813)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 3 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: JOHNSON CONTROLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: a99bb-25c\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JOHNSON CONTROLS","offers":[{"title":"Default Title","offer_id":51468227150130,"sku":"A99BB-25C","price":51.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/313945387.jpg?v=1783915084","url":"https:\/\/voomisupply.com\/products\/johnson-controls-a99bb-25c-ptc-silicon-temperature-sensor","provider":"Voomi Supply","version":"1.0","type":"link"}