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455D enclosure
Gear Reduction: 10:1 worm gear reducer
Its design minimizes false-positive readings
controlled gate swing from -5° to 110°
Exact Replacement: Compatible with various LiftMaster SD and APT commercial operators
AES PRIME7-ASSY Control Board for Prime7 Intercoms lm-sl3000 455D enclosureReplacement Control Board For AES Prime7, 4G Intercom Systems The AES PRIME7 ASSY US control board is the main replacement PCB assembly for the AES Prime7 intercom unit, built to restore reliable call, relay trigger access control, and app managed entry functions at secured gates and doors. Prime7 systems rely on proper power, grounding, and cellular provisioning, so replacing the primary board is a key step when servicing communication or control
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