TrolMaster Aqua X Control Board 24V 6 Outputs

The TrolMaster Aqua X Control Board 24V 6 Outputs (OA6-24) is an expansion board for the TrolMaster Aqua-X irrigation controller. It controls up to 6 individual 24VAC solenoid valves, each with its own independent timer schedule. Up to 5 OA6-24 boards can be connected to a single Aqua-X unit, giving you a maximum of 30 separately controlled irrigation outputs. When paired with a TrolMaster DSP-1 device, the board also provides an automatic pump-link: the pump turns on whenever any of the 6 zones activates, and shuts off when all zones are idle.

TrolMaster Aqua X Control Board 24V 6 Outputs Specifications

The following table lists the confirmed specifications derived from the canonical product record (SKU OA6-24) and the product description. Weight is sourced from the product attributes field.

Specification	Value
Brand	TrolMaster
Model / SKU	OA6-24
Output Voltage	24VAC
Number of Outputs	6 (individually controlled)
Timer Configuration	Individual timer settings per output
Max Boards per Aqua-X	5 (30 total outputs maximum)
Pump Link Support	Yes — requires DSP-1 accessory
Required Base Controller	TrolMaster Aqua-X
Weight	1.4991 lb (approx. 0.68 kg)

Why Choose the TrolMaster Aqua X Control Board 24V 6 Outputs

The OA6-24 is designed for growers who need precise, zone-by-zone control of drip or flood irrigation without a complex wiring setup. Here is what distinguishes it from a basic timer or single-output relay board:

• Six independent zones with individual timers. Each of the six 24VAC output terminals carries its own schedule. You can water one zone at dawn and another at midday without programming conflicts or shared timers.
• Scalable to 30 outputs. A single Aqua-X can run up to five OA6-24 boards simultaneously. This means a single controller can manage a 30-zone grow without adding a second base unit, which matters in large commercial or multi-room setups.
• Automatic pump-link via DSP-1. Connecting a DSP-1 to the OA6-24 creates a hardware-level interlock: the moment any zone opens, the pump turns on; when the last zone closes, the pump stops. This eliminates the need to program a separate pump timer and prevents dry-running the pump between cycles.
• Works with standard 24VAC valves. The OA6-24 drives the same 24VAC solenoid valves used in residential and commercial irrigation, giving growers a wide choice of compatible valve hardware.
• Purpose-built for the TrolMaster Aqua-X ecosystem. The board communicates natively with the Aqua-X controller, so all zone schedules are managed from the same interface used for the rest of the grow environment. No secondary app or bridge is needed.

Best Uses for the TrolMaster Aqua X Control Board 24V 6 Outputs

The OA6-24 is most useful in irrigation setups where multiple zones need independent scheduling and the wiring overhead of a traditional controller is a concern. Common applications include:

• Multi-zone drip irrigation in indoor grow rooms. Assign one output per row, bench, or plant variety so each area receives the exact run-time it needs. This is common in mixed-crop grows where different plants have different water requirements.
• Expanding an existing Aqua-X installation. Growers who already use the TrolMaster Aqua-X and need more valve outputs can add OA6-24 boards without replacing their controller. Each board adds six zones to the existing setup.
• Ebb-and-flood or NFT systems with multiple tables. When each flood table or NFT channel has its own solenoid, the OA6-24 lets the operator stagger flood cycles across tables without simultaneous demand spikes on the water supply. Pair it with a 1.5-inch inline filter on the main supply line to protect valve seats from debris.
• Greenhouse irrigation with zone segmentation. Divide a greenhouse into sections by crop stage or species; each section runs on its own OA6-24 output with an independent schedule tuned to that section’s needs.
• Commercial grows with centralized controller requirements. Multiple OA6-24 boards chained to a single Aqua-X allow a facility manager to control all irrigation zones from one point of management rather than running separate zone controllers at each station.

TrolMaster Aqua X Control Board 24V 6 Outputs vs Similar Products

Two suppliers list the OA6-24 at price points other than the cultivate_supply reference price. DS Urban Farm lists the board at $128.00 with 20 units confirmed in stock. Grow Wiser lists it at $95.26 with availability confirmed but no stock quantity on record. These are the same OA6-24 board distributed through different channels — the hardware specification is identical across all three listings. The meaningful comparison for a buyer is therefore not between hardware variants but between the OA6-24 and a generic 6-zone irrigation timer.

A standard 6-zone landscape irrigation timer (the type found at home improvement stores) provides six outputs but operates independently — it is not designed to slave to a central environmental controller, and it does not support a hardware pump-link signal. The OA6-24 trades that standalone capability for tight integration with the Aqua-X ecosystem: scheduling and zone management happen through the Aqua-X interface rather than a separate timer face, and the DSP-1 pump-link eliminates the need for a second device to manage pump timing. Growers who already run TrolMaster equipment will find the OA6-24 integrates more directly than any off-the-shelf timer alternative. Growers not already on the TrolMaster platform should factor in the cost of the Aqua-X base unit before purchasing this board.

Compatibility

The OA6-24 is an accessory board, not a standalone controller. It requires a TrolMaster Aqua-X base unit to function. The following compatibility notes are derived directly from the product description:

• Required controller: TrolMaster Aqua-X. The OA6-24 connects to the Aqua-X and receives zone scheduling from it. A maximum of 5 OA6-24 boards can be connected to a single Aqua-X.
• Valve type: 24VAC solenoid valves. This is the standard valve voltage used in residential and commercial drip, flood, and spray irrigation. The board does not support 110V or DC valves.
• Pump-link accessory: TrolMaster DSP-1. The pump-link feature is only active when a DSP-1 is connected to the OA6-24. Without the DSP-1, the board still controls all six valve outputs on their individual timers; it simply does not send an automatic pump-on signal.
• Water filtration: TrolMaster does not publish a filtration requirement for the OA6-24 itself, but operating 24VAC solenoid valves with unfiltered irrigation water can shorten valve diaphragm life. A reverse osmosis system or a dedicated inline filter on the main supply line is a common upstream addition in precision grow environments.
• Monitoring and measurement: The OA6-24 manages valve timing but does not measure nutrient concentration or pH in the irrigation stream. Growers tracking EC in recirculating systems typically use a separate EC meter alongside the controller.

Usage Guidelines

The OA6-24 controls when valves open and for how long. The scheduling logic lives in the Aqua-X controller; the OA6-24 is the output stage that physically opens and closes each valve. Key operational points:

• Zone timers are independent. Each of the six outputs has its own start time and run duration. There is no requirement for zones to run sequentially — multiple zones can be active simultaneously if the water supply and pump capacity support it.
• DSP-1 pump-link logic. When a DSP-1 is connected and any zone on the OA6-24 opens, the DSP-1 activates the pump. The pump remains on as long as at least one zone is active. Once all zones close, the pump turns off automatically. This behavior holds across all five chained boards, so the pump responds to any active zone on any of the up to 30 outputs.
• Scaling up. When adding additional OA6-24 boards to an existing Aqua-X setup, each board registers as a new set of outputs within the Aqua-X interface. Zone numbering and scheduling for each board are configured through the Aqua-X, not through any controls on the board itself.
• Valve sizing. Ensure your 24VAC solenoid valves are rated for the flow rate and pressure of your irrigation line. The OA6-24 sends the 24VAC signal to open and close the valve; the flow rate through the valve is determined by the valve’s own specifications and your supply pressure.
• Air pump aeration in recirculating setups. In DWC or recirculating drip systems, growers often run a dedicated air pump to maintain dissolved oxygen levels in the reservoir between irrigation cycles. The OA6-24 handles the water delivery timing; dissolved oxygen management is a separate system running in parallel.

How to Install the TrolMaster Aqua X Control Board 24V 6 Outputs

The canonical product description does not include step-by-step installation instructions. The following steps are based on the product’s design as an Aqua-X expansion board and the standard conventions for 24VAC irrigation controller wiring. Consult TrolMaster documentation for model-specific wiring diagrams before connecting power.

1. Power down the Aqua-X controller before connecting any expansion board. Do not plug in or unplug boards while the controller is energized.
2. Connect the OA6-24 to the Aqua-X using the appropriate port or cable specified in the Aqua-X documentation. Verify the connector is fully seated.
3. Wire each solenoid valve to its assigned output terminal on the OA6-24. Each 24VAC solenoid valve requires two wires: one to the numbered zone terminal and one to the common (COM) terminal. Use wire rated for the current draw of your solenoid valves.
4. If using the pump-link feature, connect the DSP-1 to the OA6-24 per TrolMaster’s DSP-1 wiring guide. Confirm the DSP-1 is wired to the pump’s control circuit, not directly in the pump’s power line, unless the wiring diagram specifies otherwise.
5. Power on the Aqua-X and confirm the OA6-24 outputs register in the controller interface. The Aqua-X should display the new board’s outputs as available zones.
6. Program each zone’s schedule through the Aqua-X interface: set start times, run durations, and any repeat intervals for each of the six outputs. Verify schedules do not exceed the pump’s rated continuous run time.
7. Run a manual test cycle for each zone individually. Confirm the correct valve opens on activation and closes when the timer expires. Check all fittings for leaks before leaving the system unattended.
8. If adding more OA6-24 boards in the future, repeat steps 1–7 for each additional board. Keep a record of which zone number corresponds to which physical valve location to simplify future troubleshooting.

Sources & Further Reading