Global Caché GC-100 & Home Assistant
The GC-100 integration covers the parts of a Global Caché gateway that the iTach remote platform does not: the relays and the flexible ports configured as digital inputs. Relays become switch entities and digital inputs become binary_sensor entities, which is how dry-contact equipment such as gate operators, gas fireplaces, projection screens, and pool controllers reaches Home Assistant.
It connects over the local network to port 4998 and is configured entirely in YAML, with each relay or input addressed by module and port as 'x:y': name. The integration is local-polling, so input changes surface on the poll rather than as a push.
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Global Caché GC-100
HA DocumentationHow Global Caché GC-100 Works with Home Assistant
Getting Global Caché GC-100 connected to Home Assistant and running reliably.
Connect your hub
Add Global Caché GC-100 through the integrations panel. Hub-connected devices, network clients, and system health metrics appear as entities in Home Assistant.
Device tracking & presence
Use Global Caché GC-100 network data for presence detection. Know who's home based on which phones are connected to your network — no app required on their devices.
Network-aware automation
Build automations based on network state. When a specific device connects or disconnects, trigger scenes, adjust settings, or send notifications.
Common Global Caché GC-100 Issues
The problems installers run into with Global Caché GC-100 and Home Assistant — and how a managed setup prevents them.
It will not run alongside the iTach integration on the same unit
Home Assistant warns that the gc100 and iTach integrations will likely not function concurrently against the same GC-100, because of how the unit's TCP socket server behaves. A gateway that needs both IR and relay control in Home Assistant usually means budgeting two units.
Relays and digital inputs only
IR needs the separate iTach platform and the RS-232 ports are not supported at all. A GC-100-12 bought for its two serial ports gets no serial support from this integration; those ports are only reachable from something that already speaks the attached device's protocol over a socket.
Dry contacts, not load switching
The relays are isolated low-voltage contacts rated 24V AC/DC at 0.5 A. They close a circuit for equipment that expects a contact and cannot switch a mains load, which is a common and expensive misread at specification time.
YAML only, addressed by IP, polled
No config flow and no discovery. Ports are hand-mapped in YAML by module and port number, the gateway is referenced by IP address, and input state arrives on a poll rather than instantly.
Why installers choose managed GC-100 setups
- Relay and input maps documented per port, so the wiring and the YAML stay in agreement years later
- IR and relay roles split across gateways up front, avoiding the concurrent-connection failure mid-job
- Contact ratings checked against the load before specification, with a contactor added where one is needed
- Static addressing and poll intervals tuned so gate and fireplace contacts behave predictably
Global Caché GC-100 devices we deploy
Hardware from the Selora catalog that runs on this integration. Every unit is tested and supported as part of a managed installation.
IR & Serial Control
6 devicesGC-100-06
The GC-100-06 network adapter combines three IR ports and one RS-232 port in a single Ethernet-connected box. It is the entry point of the GC-100 range that Home Assistant's itach and gc100 integrations are written against, and it is still the unit found in a great many existing AV racks.
GC-100-12
The GC-100-12 network adapter carries six IR ports, two RS-232 ports, and three relays in one Ethernet box. It is the Global Caché unit Home Assistant's gc100 integration is documented against, and the one that covers a whole rack of IR gear plus dry-contact loads from a single IP address.
iTach Flex FLEX-IP
The iTach Flex FLEX-IP is a single wired gateway whose function is set by the cable you plug into it: IR, RS-232, RS-485, or relay and sensor. It speaks the same TCP API as the iTach and GC-100, so with an IR cable fitted Home Assistant drives it through the itach remote platform.
iTach Flex FLEX-WF
The iTach Flex FLEX-WF is the Wi-Fi version of the Flex gateway, a gum-pack-sized endpoint whose role is set by the Flex Link cable fitted to it. With an IR cable it answers Home Assistant's itach remote platform; with the relay and sensor cable it answers the gc100 platforms.
iTach IP2CC
The iTach IP2CC puts three dry-contact relays on a wired network, for the gate operators, fireplaces, screens, and pool equipment that only accept a momentary or maintained contact. Home Assistant drives Global Caché relays through the gc100 integration's switch platform.
iTach WF2CC
The iTach WF2CC is the Wi-Fi version of the IP2CC, giving three dry-contact relays a network connection where no cable reaches. It is the practical way to put a detached gate, gas fireplace, or pool controller under Home Assistant through the gc100 integration.
Frequently Asked Questions
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