- 1 × RJ12 Splitter Hub (SPH-1)
- 1 × 12V Power Adapter
- 1 × 4ft RJ12 Cable
Ask Sage about this product
TrolMaster SPH-1 8-Port RJ12 Powered Splitter Hub
- 8 individual RJ12 jacks connect sensors, device stations, and lighting adapters
- Active signal boost enables reliable control of large LED fixture arrays and long cable runs
- Input voltage of 12 VDC with a maximum current of 1A
- 3-year warranty, covering all mechanical and electronic components
- View More Details
Shipping calculated at checkout
Earn 32 points for shopping and get $0.32 off your next order. Join Harvest Club for free.
Over 50,000 Customers
Trust Trimleaf
Transparent Pricing
Backed w/ price match guarantee
Secure Checkout
SSL encrypted payments
Questions? Talk to a specialist.
Mon to Fri, 9am to 5pm PST
- Over 50,000 CustomersTrust Trimleaf
- Transparent PricingBacked w/ price match guarantee
- 4.8/5 Top Quality Store on Google
- Secure CheckoutSSL encrypted payments
Ask Sage about this product
VOLUME PRICING
Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
- You are wiring a large array of LED grow lights because you need a clean and boosted signal path.
- You are running long cable runs because you want commands to pass cleanly without signal degradation.
- The powered signal boost handles the load that passive splitter chains cannot reliably support.
- The 12V power adapter and 4ft RJ12 cable are included so the unit is ready to use out of the box.
- Users managing large arrays of LED fixtures report that moving to the powered hub cleared up intermittent signal issues.
- Operators who simplified their cable layout say they spend less time tracking down loose connections behind the rack.
TrolMaster SPH-1 8-Port RJ12 Powered Splitter Hub
Daisy-chaining Y-splitters across a TrolMaster system works — until the cable runs get long, the device count gets high, or you're trying to control an array of LED grow lights that demands a clean, boosted signal path. The TrolMaster SPH-1 is a powered 8-port RJ12 splitter hub that replaces Y-splitter chains with a single central connection point, providing eight individual RJ12 jacks for sensors, modules, and lighting adapters. Its active signal booster ensures commands pass cleanly to all connected devices — including large arrays of LED fixtures — without degradation. A single RJ12 cable runs back to the main controller, such as the Hydro-X HCS-2, keeping the overall wiring layout clean and manageable. Mount it centrally and route all device connections from one point.
Compatibility: TrolMaster Hydro-X, Green-X, and Tent-X Systems
⚠️ Do not connect the 12V DC power adapter to the SPH-1 when using a single LMA adapter. Exception: 12V power IS required when using the LMA-T with a ThinkGrow light system.
All Sales Final
What's Included
Features
🔌
8 RJ12 Ports
Eight individual RJ12 jacks connect sensors, device stations, and lighting adapters from a single hub — eliminating Y-splitter daisy chains entirely.
⚡
Active Signal Boost
Powered hub actively boosts signals passing through it — enabling reliable control of large LED fixture arrays and long cable runs without signal degradation.
🗺️
Central Hub Architecture
Mount the SPH-1 at a central location and run all device connections from one point — one RJ12 cable back to the controller keeps the system layout clean.
💡
LED Array Compatible
Specifically suited to managing arrays of LED grow fixtures — the powered signal boost handles the load that passive splitter chains cannot reliably support.
🔧
Plug & Play Setup
Power adapter and 4ft RJ12 cable included. Ready to use out of the box — no configuration or additional hardware required for standard setups.
TrolMaster SPH-1 Specifications
| Specification | Value |
|---|---|
| Number of RJ12 Ports | 8 |
| Input Voltage | 12 VDC |
| Maximum Current | 1A |
| Hub Type | Active (powered signal boost) |
| Working Environment | Temperature 32–122°F (0–50°C), Humidity ≤90% |
| Package Dimensions | 160mm (L) × 85mm (W) × 90mm (H) |
| Compatibility | TrolMaster Hydro-X, Green-X, Tent-X |
Support & Manuals
Warranty
TrolMaster backs the SPH-1 with a 3-year warranty from the original date of purchase, covering all mechanical and electronic components under normal operating conditions. Components that fail due to abnormal or improper usage are excluded from this coverage.
FAQs
What is the SPH-1 used for?
The SPH-1 is a powered 8-port RJ12 splitter hub that consolidates all device connections in a TrolMaster system into a single central point, eliminating the need for Y-splitter daisy chains. It actively boosts signals passing through it, making it especially useful for large LED fixture arrays or long cable runs where passive splitters can cause signal degradation. One RJ12 cable runs from the SPH-1 back to a main controller like the Aqua-X NFS-2.
When should I NOT connect the 12V power adapter to the SPH-1?
TrolMaster specifies that the 12V DC power adapter should NOT be connected to the SPH-1 when using a single LMA adapter — with one exception: 12V power IS required when using the LMA-T adapter with a ThinkGrow light system. For all other single LMA adapter setups, leave the power adapter disconnected to avoid potential damage to the adapter or connected fixtures.
What is the difference between the SPH-1 and a standard Y-splitter?
A standard RJ12 Y-splitter is a passive device — it splits the signal without boosting it, which can cause degradation when multiple splitters are chained together or when long cable runs are involved. The SPH-1 is an active powered hub that boosts the signal as it distributes it across all eight ports, maintaining signal integrity regardless of device count or cable length. It also provides eight organized ports in place of a tangle of individual splitters.
How many devices can I connect to the SPH-1?
The SPH-1 provides eight RJ12 ports, allowing up to eight device connections — sensors, device stations, LMA adapters, or other RJ12-compatible TrolMaster devices — from a single hub. One port is typically used for the RJ12 cable running back to the main controller, leaving seven ports available for peripherals in a standard configuration.
Does the SPH-1 work with LED grow light arrays?
Yes — the SPH-1's active signal boost is specifically noted as making it suitable for controlling arrays of LED grow fixtures. Where a passive Y-splitter chain may lose signal integrity across multiple LMA adapters and fixtures, the SPH-1's powered hub maintains clean signal delivery to all connected devices simultaneously.
Where should I mount the SPH-1 in my grow room?
Mount the SPH-1 at a central location in your grow space — ideally at the midpoint of where your connected devices are distributed. This minimizes individual cable run lengths from the hub to each device and keeps the single return cable to the main controller as short and clean as possible. Wall mounting near the canopy level works well for LED lighting setups.
Happy To Help
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.
10+
Years of Specialist Knowledge
4.8★
2010+ Verified Reviews
50,000+
Growers Served
120+
Top Equipment Brands in Stock