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The built-in rechargeable lithium battery ensures long-lasting usage
regulated output to support a variety of low-voltage systems
It features a powerful audible alert combined with a bright visual strobe
This power supply/charger ensures uninterrupted operation
Security Door Controls 491-BB Blue Surface Mount Box for 491 8mm The built-in rechargeable lithium batteryThe Security Door Controls 491 BB is a durable, surface mounted enclosure designed to house the SDC 491 series push button exit switches. Constructed from high quality materials, this blue colored mount box provides a secure and professional installation for emergency exit and access control systems. Its rugged design ensures long lasting durability in commercial, industrial, and institutional applications. With pre drilled mounting holes, the box
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