Introducing the Resideo 958-2 Overhead Door Magnetic Contact Sensor, designed for reliability and durability. This sensor features an epoxy-sealed construction that safeguards against moisture and impact, ensuring long-lasting performance. Its innovative “Shock Absorber” design provides exceptional protection for the reed, preventing flex or damage to the housing. With a standard gap of 2-3/8" (60 mm) minimum, this sensor is perfect for various applications. Upgrade your security system with this robust and dependable sensor. Don't wait—secure your space today with the Resideo 958-2!