Gavita CT1930e LED 120-277V

The Gavita CT1930e LED 120-277V is a full-facility LED toplight engineered to replace existing 1000W HPS fixtures without rewiring or changing your layout. It delivers more light across a broader spectrum than the Gavita Pro 1000e DE HPS at up to 20% lower energy consumption, and its patent-pending controller technology integrates with Gavita EL Master Controllers and most building automation systems.

Gavita CT1930e LED Specifications

The CT1930e is built around a universal 120–277V input, making it compatible with the electrical infrastructure already in place for most commercial and large-scale HPS installations. The fixture weighs approximately 80 lbs and shares the same mounting footprint as the Gavita Pro 1000e DE HPS, so existing hangers and rail spacing transfer directly.

Specification	Value
Product Name	Gavita CT1930e LED
Voltage Input	120–277V
Fixture Weight	79.99 lbs (~80 lbs)
Fixture Type	LED Toplight (compact)
HPS Equivalent	Gavita Pro 1000e DE HPS (1:1 layout replacement)
Energy Savings	Up to 20% vs Gavita 1000W DE and single-ended HPS
Controller Capacity	Up to 2,000 fixtures per EL Master channel
Controller Compatibility	Gavita EL Master Controllers (sold separately)
Building Automation	Compatible with most building automation systems
EL1/EL2 Adapter (if required)	HGC906717 or HGC906716 (sold separately)
Brand	Gavita

Why Choose the Gavita CT1930e LED

The CT1930e addresses a specific and common problem in commercial horticulture: facilities that were built around 1000W HPS lighting and want to convert to LED without incurring the full cost and downtime of an infrastructure overhaul. Here is what the canonical description tells us about why this fixture stands out:

• 1:1 HPS layout replacement. The CT1930e shares the same physical footprint as the Gavita Pro 1000e DE HPS, which means existing fixture positions, hanger spacing, and row geometry carry over without adjustment. You are not redesigning your layout — you are swapping out the fixture.
• Fits existing wiring and electrical infrastructure. The 120–277V universal input is deliberately matched to the voltage ranges already in place for most indoor growing environments. In most facilities this means no new electrical runs, no new circuit breakers, and dramatically reduced conversion downtime.
• Up to 20% energy savings. According to the manufacturer, the CT1930e delivers more light in a broader spectrum at up to 20% lower energy consumption compared to Gavita 1000W DE and single-ended HPS fixtures (based on average wattage per fixture). This is a verifiable reduction in operating cost at commercial scale.
• Patent-pending large-scale dimming and control. Embedded controller technology in each fixture enables control of up to 2,000 fixtures per EL Master channel. This is relevant for multi-room or multi-tier facilities where centralized light scheduling and dimming are essential to production consistency.
• Consistent output across the installation. The per-fixture controller technology is specifically described as helping maintain unwavering output from fixture to fixture — meaning light levels stay uniform across the canopy rather than drifting between units over time.

Best Uses for the Gavita CT1930e LED

This fixture is designed for commercial and large-scale indoor growing operations. Its design priorities — layout compatibility, voltage flexibility, and centralized control capacity — point to specific deployment scenarios where it performs best.

• Converting existing HPS facilities to LED. The primary use case is a facility currently running Gavita Pro 1000e DE HPS fixtures that wants to transition to LED. The CT1930e slots into the same positions and uses the same electrical connections, keeping conversion costs low and minimizing the dark period required to complete the switch.
• Large commercial grows requiring centralized control. With support for up to 2,000 fixtures per EL Master controller channel, the CT1930e is suited for warehouses and multi-room facilities where operators need to adjust light schedules and intensity levels from a single control point. If you are already running a Gavita Pro 1700e LED in other rooms, the same EL Master Controller infrastructure will integrate the CT1930e.
• Flowering and production-stage crops. The CT1930e is described as a toplight delivering serious growing power — this language is specific to high-intensity production-phase lighting for crops like cannabis, tomatoes, peppers, and cucumbers that require high PPFD levels at the canopy.
• Facilities with existing building automation systems. The fixture is compatible with most building automation systems (BAS), which means growers who have already integrated their climate, CO2, and irrigation controls into a facility-wide BAS can add lighting to that same system without a separate controller.
• Multi-tier or vertically stacked production. As a compact toplight with a defined footprint, the CT1930e can be positioned in tier configurations where space between canopy levels is limited, provided ceiling height and rafter load ratings accommodate the ~80 lb fixture weight.

Gavita CT1930e LED vs HPS Lighting

The canonical description for the CT1930e is explicit about its reference competitor: the Gavita Pro 1000e DE HPS, a fixture that Gavita describes as having helped revolutionize the industry nearly three decades ago. The comparison the manufacturer draws is narrow and specific, and worth examining on its own terms.

The Gavita Pro 1000e DE HPS is a double-ended high-pressure sodium fixture that has been a standard in commercial horticulture for years. Its strengths are a known spectrum tuned to plant growth, predictable output, wide adoption, and an extensive aftermarket for bulbs and parts. Its weaknesses at this stage of the technology cycle are primarily heat output, energy consumption relative to modern LED, and the maintenance overhead of regular bulb replacement.

The CT1930e is designed to address those weaknesses while retaining the layout and infrastructure advantages that made HPS the standard in the first place. According to the manufacturer, it delivers more light in a broader spectrum at up to 20% lower energy consumption (based on average wattage of each fixture). The broader spectrum claim reflects the well-documented difference between LED full-spectrum output and the narrower spectral distribution of high-pressure sodium, which is weighted heavily toward yellow-orange wavelengths.

What the CT1930e does not change is the mounting geometry. If your facility’s layout was optimized for a 1000e DE HPS footprint — row spacing, hanging height, coverage zones — that optimization carries forward. You are not re-running light modeling from scratch. This is the core engineering trade-off the fixture is built around: maximize conversion ease rather than optimize for peak raw output independent of legacy constraints.

For growers who are starting a new facility from scratch or who are not constrained by existing HPS infrastructure, Gavita’s other LED options such as the Gavita Pro 1700e LED may offer a better fit since those fixtures are designed without the HPS-compatibility constraint and can be positioned for maximum LED performance from the ground up.

Compatibility & Operating Range

The CT1930e is designed to work within the electrical and control infrastructure already present in most indoor commercial growing environments. Below is a summary of what the canonical description confirms about compatibility:

• Voltage: 120–277V universal input. This covers the standard single-phase ranges used in North American commercial facilities, meaning the fixture will work on both 120V and 240V circuits without modification.
• Gavita EL Master Controllers: The CT1930e is compatible with Gavita EL Master Controllers, sold separately. These controllers allow centralized dimming and scheduling across large fixture arrays. Each EL Master control channel can manage up to 2,000 CT1930e fixtures.
• EL1 and EL2 Controllers: If connecting to an older Gavita EL1 or EL2 controller, an adapter is required. The specific parts are HGC906717 (for EL2) or HGC906716 (for EL1), available separately. Do not attempt to connect the CT1930e to an EL1 or EL2 without the correct adapter.
• Building automation systems: The fixture is described as compatible with most building automation systems, which means it can integrate into facilities that use centralized HVAC, environmental, and lighting control platforms.
• Physical footprint: Designed to fit in existing Gavita Pro 1000e DE HPS mounting positions. This covers standard commercial grow-room rafter spacing and ratchet hanger configurations used with the 1000e DE.

For power cord compatibility, Gavita’s 8-foot power cords for LED fixtures are a common accessory for CT-series installs. If your facility is also adding new LED runs that need dedicated cabling, a quality grow-room power cord rated for the correct voltage and amperage is essential before commissioning.

Usage Guidelines

The CT1930e is a high-intensity production LED intended for the vegetative and flowering stages of commercially grown crops. The following usage notes are derived from the manufacturer’s product description and apply to standard deployment:

• Hanging height: Because the CT1930e is a 1:1 replacement for the Gavita Pro 1000e DE HPS, growers transitioning from that fixture can use the same hanging height settings they have already dialed in for their crop and growth stage. If starting fresh, consult Gavita’s coverage charts for the CT-series to determine the correct height for your target PPFD at the canopy.
• Dimming and scheduling: When paired with a Gavita EL Master Controller, the CT1930e can be dimmed and scheduled centrally. This is particularly useful for sunrise/sunset simulation, heat management during high ambient temperature periods, and light-sum management in production schedules.
• Coverage: The compact toplight format is optimized for close-canopy, high-density commercial installations. Coverage area will depend on hanging height and target PPFD; refer to Gavita’s official coverage documentation for your specific crop targets.
• Controller setup: Before commissioning, confirm whether you are using a Gavita EL Master Controller or an older EL1/EL2 unit. If using EL1 or EL2, procure the required adapter (HGC906717 or HGC906716) before installation. Without the adapter, the controller connection is not supported.
• Energy monitoring: The up to 20% energy savings figure is based on average wattage comparisons between the CT1930e and Gavita 1000W DE and single-ended HPS fixtures. Actual savings will depend on your facility’s electrical tariff, existing fixture efficiency, and dimming schedule.

How to Install the Gavita CT1930e LED

The following steps are based on the generic LED toplight installation sequence appropriate for this fixture type. Always refer to Gavita’s official installation guide included with the fixture for model-specific wiring diagrams and torque specs.

1. Prepare the mounting point. Identify the existing ratchet hangers or overhead mounting hardware from your previous HPS installation. Because the CT1930e is designed as a 1:1 layout replacement for the Gavita Pro 1000e DE HPS, existing mount points and row spacing should carry over directly. Verify that the mounting structure can safely support approximately 80 lbs per fixture.
2. Hang the fixture. Attach ratchet hangers or mounting hardware to the CT1930e fixture per Gavita’s hardware instructions. Adjust to the appropriate hanging height for your crop and growth stage (see Usage Guidelines above).
3. Connect to power. The CT1930e accepts 120–277V input. Connect using a compatible power cord rated for the circuit voltage and amperage. For 120V runs, use a cord rated for the CT1930e’s draw. For 208–277V runs, verify cord and plug ratings match the circuit. Do not connect to a circuit that exceeds the fixture’s rated input voltage range.
4. Connect to controller (if applicable). If using a Gavita EL Master Controller, connect the controller data cable to the fixture per the EL Master wiring diagram. If using an older EL1 or EL2 controller, install the required adapter (HGC906717 for EL2, HGC906716 for EL1) before connecting. If integrating with a building automation system, follow your BAS vendor’s fixture commissioning procedure.
5. Power on and verify. Switch on the circuit and verify that the fixture’s indicator lights illuminate as expected per Gavita’s documentation. Confirm that the controller (if connected) recognizes the fixture. Check that dimming commands from the controller produce the expected output change at the fixture.
6. Adjust hanging height and coverage. After initial power-on, use a PAR meter to verify PPFD at the canopy matches your target for the current growth stage. Adjust hanging height as needed. For multi-fixture arrays, check uniformity across canopy positions to ensure the patent-pending output-consistency features are functioning as described.

Sources & Further Reading