GRI 28A Surface Mount Magnetic Reed Switch Set, Closed Loop, Standard Gap up to 1", Concealed Terminals, White

For dependable perimeter and entry-point protection, the George Risk Industries 28A surface-mount magnetic contact is engineered for commercial security and access control applications. This magnetic contact (reed switch) provides closed-loop monitoring with a standard 1-inch gap, concealed terminals for tamper resistance, and a hermetically sealed design that prevents switch sticking or freezing—ensuring consistent performance for alarm systems and surveillance integrations. Installers appreciate the available pre-wired PA option with 24-inch #22 AWG leads plus included covers, spacers and mounting hardware that speed deployment and reduce labor. The 28A is UL/ULC approved and backed by a lifetime warranty, giving integrators and facilities managers the compliance and longevity they need for mission-critical monitoring. Ideal for doors, frames and gates in retail, education, healthcare and industrial sites, the GRI 28A fits into access control, intrusion detection and surveillance ecosystems with minimal gap penalty on steel surfaces. Add the GRI 28A to your next security project to simplify installations and strengthen system reliability.

• Strengthen perimeter security with reliable closed-loop monitoring that reduces false alarms and protects entry points
• Concealed terminals and low-profile surface-mount design deliver a tamper-resistant, professional installation aesthetic
• Hermetically sealed reed switch and plated contacts resist sticking or freezing for dependable performance in commercial environments
• Pre-wired 24-inch #22 AWG lead option and included covers, spacers, and mounting hardware cut installation time and labor costs
• UL/ULC approvals and a lifetime warranty give installers and facility managers long-term confidence and code-compliant reliability