The Optex BC-4 Back Cover is designed specifically for the Optex SL series detectors, providing a reliable protective cover for pole-mounted installations. This essential accessory enhances the durability and longevity of your security setup by shielding the detector from environmental factors. Easy to install and durable, it ensures your Optex SL series detector remains in optimal condition. Upgrade your security system with this practical back cover and safeguard your device effectively. Don't miss out on enhancing your protection today!