Growlink M8 Extension Cable Kit for Branching ClimaLINK & TerraLINK Sensors
The Growlink M8 Extension Cable Kit bundles a 5-meter M8 sensor extension with an inline T-connector and a matching end cap. The kit branches one canopyLINK HUB port across multiple ClimaLINK or TerraLINK sensors. The 4-pin M8 connectors at every junction stay sealed against grow-room humidity and the daily dust that kills generic patch cables. The T-connector lets one HUB port feed two sensor branches at the same time. The end cap closes off any unused branch leg to keep the bus terminated cleanly. Plug-and-play mating means no firmware setup — auto-addressing on the canopyLINK side picks up each connected sensor on the next sweep.
Splitting Sensor Branches with an M8 Sensor Extension Kit
Run two sensors per HUB port instead of one — climate on one branch, substrate on the other. This frees up the remaining canopyLINK ports for additional zones. Place the T-connector near the canopy so each branch can route to its sensor location without strain. Daisy-chaining beyond a single split risks signal weakening on long cable runs. For more than two sensors per branch, drop in an additional HUB or canopyLINK module rather than stacking extra T-connectors. The end cap matters more than it looks: an open branch leg can collect moisture and corrode the contacts over a flowering cycle. Cap the unused side at install and the assembly stays sealed for the life of the run. The trade-off is that every M8 mating point is one more thing to inspect. Pull the connectors at room turnover and check for green oxidation before re-mating — early corrosion is the first sign a junction is leaking signal.
Key Features
- Bundled 5m Cable + T-Connector + End Cap: Branch one canopyLINK HUB port between two M8 sensors without buying separate fittings.
- Sealed M8 4-Pin Connectors: All junctions stay sealed against humidity and dust for the life of a flowering cycle.
- Plug-and-Play with Auto-Addressing: Plug in, mate the connectors, and the canopyLINK sees each sensor automatically.
- Full ClimaLINK & TerraLINK Compatibility: Climate, substrate, CO2, light, moisture — any Growlink M8 sensor works on the bus.
- Cultivation-Grade Construction: Shielded cable and end-cap termination keep signal clean in grow-room environments.
Technical Specifications
| Specification | Value |
|---|---|
| Kit Contents | 5m M8 extension cable, M8 T-connector, M8 end cap |
| Cable Length | 5 m (~16.4 ft) |
| Connector Type | M8 4-pin |
| Sensor Compatibility | ClimaLINK, TerraLINK, and other Growlink M8 sensors |
| Hub Compatibility | canopyLINK Sensor HUB M8 ports |
| Configuration | Single HUB port splits to two sensor branches |
| Construction | Shielded cable, sealed connectors, cultivation-grade jacket |
| Installation | Plug-and-play (hand-tightened mating, no tools) |
| Sensor Types Supported | Climate (temp, RH, VPD), substrate (VWC, EC, temp), CO2, light |