Specs Behind the Growlink M8 Extension Cable 5m
The Growlink M8 Extension Cable 5m runs a single 5-meter (about 16 ft 5 in) line between a ClimaLINK or TerraLINK sensor and its host. The cable terminates on M8 4-pin A-coded connectors at both ends. Male on one end, female on the other. The fit matches the inline connector the sensors ship with. Conductors are 24 AWG inside a PVC jacket. The jacket is RAL 5015 sky blue. That makes the run easy to trace through trellis netting and cable bundles when a sensor needs swapped mid-room. Threaded collars at both connectors lock the assembly down against vibration.
Routing the 4-Pin Male-to-Female Cable in a Real Grow Layout
The 5m run handles canopy drops, bench-to-wall routing, and short greenhouse purlin pulls. TerraLINK ships from the factory with a 2-meter cable. This Growlink M8 cable brings the total to roughly 7 meters from the canopyLINK or PIC host port. Pin layout follows the standard A-code arrangement. Pins 1 and 2 carry 24VDC power. Pins 3 and 4 carry the analog signal. That keeps the ClimaLINK TerraLINK extension cable compatible with both sensor types without rewiring. The plug-and-play fit means a damaged M8 sensor extension cable swaps out in under a minute. Twist the collar loose, pull the cable, replace, twist tight. Pair the 5m with the 10m option if the room mixes short canopy drops with longer wall runs. Most rooms work through a couple of these per season as routing changes between strains. The blue jacket makes leftover offcuts easy to spot and pair with the right host on the next swap.
Key Features
- 5-Meter (16 ft 5 in) Length: Covers canopy drops, bench-to-wall pulls, and most short purlin runs through a single tent or bay.
- M8 4-Pin A-Coded, Male-to-Female: Inline replacement for the factory cable on ClimaLINK and TerraLINK — drops in with no adapter.
- 24 AWG Conductors in PVC Jacket: Spec-grade wire holds the analog signal stable across the full 5 m run without resistance noise.
- RAL 5015 Sky Blue: Distinct jacket color makes the cable easy to trace through trellis netting and bundled runs.
- Standard A-Code Pinout: Pins 1+2 carry 24VDC power and pins 3+4 carry the analog signal — matches Growlink's sensor wiring.
Technical Specifications
| Specification | Value |
|---|---|
| Length | 5 m (≈ 16 ft 5 in) |
| Connectors | M8 4-pin A-coded — male × female (threaded collars) |
| Conductor Size | 24 AWG |
| Jacket Material | PVC |
| Jacket Color | RAL 5015 sky blue |
| Pinout | Pin 1 = 12/24VDC, Pin 2 = signal, Pin 3 = ground, Pin 4 = signal/aux (A-code standard) |
| Carries | 24VDC power + analog sensor signal |
| Compatible Sensors | Growlink ClimaLINK, TerraLINK (canopyLINK / PIC host) |
| Alternate Lengths | 10 m M8 extension and 5 m M8 Extension Kit (T-connector + end cap) available |