An automatic door closer (more often called a "door opener") opens the door itself, typically under the control of a push button, motion detector or other device, and then closes it as well, typically employing a motion or proximity detector to determine when it is safe to close the door.
The Arrow 7836U Powered Door Operators are low-energy operators which function as standard spring-force closers during close cycles when a door is opened manually, or if power is lost or turned off. The 7836U is a hard wired door operator ideal for doctors’ offices, retirement facilities, schools, churches, and other applications where noise may be a concern. FACTORY ORDER. Please allow up to 3 weeks to ship Learn More$2,009.18
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