Hubs and repeaters extend a network connection past its normal reach: general-purpose network hubs that share a connection across several ports, and low-voltage PoE repeaters purpose-built to carry power and data further along security-camera and access-control device runs than standard Ethernet allows. Wherever a device sits farther from the switch than a single cable run supports, one of these closes the distance.
Match the repeater to the job: PoE repeaters for security and access-control devices are typically rated for a specific added distance and power budget, so confirm both against the actual cable run and the device's power draw. General network hubs are largely legacy hardware next to modern switches, useful mainly for simple shared-connection needs rather than performance-sensitive networks. For camera and door-controller installations, treat the repeater as part of the cable plan from the start, not an afterthought when a run comes up short. COLAMCO supplies network extension hardware for the security, access-control, and general networking runs business, government, and education facilities install.