Titan Controls Zephyr 2 – High Temp Shut Off

The Titan Controls Zephyr 2 is a high-temperature shut-off controller designed to automatically turn off your grow lights when the ambient temperature exceeds a user-defined set point. Built with a 6 ft temperature probe accurate to within 2°F, it monitors your growing environment and cuts power before heat stress damages your crop. A built-in 1–30 minute hot start delay with a HOLD feature prevents premature restarts, while the dust-, rust-, and moisture-resistant enclosure stands up to the demands of a working grow room.

Titan Controls Zephyr 2 Specifications

Key electrical and physical specifications for the Zephyr 2 high-temperature shut-off controller, derived from the manufacturer canonical data.

Why Choose the Titan Controls Zephyr 2

The Zephyr 2 addresses one of the most common causes of crop loss in enclosed growing spaces: runaway heat from high-intensity lighting. Rather than relying on a grower to monitor temperatures manually, it automates the protective response and handles the lamp warm-up cycle so you don’t have to intervene each time the system cycles.

• Automatic high-temp protection: The controller continuously monitors the ambient temperature via its 6 ft probe and cuts power to your lights the moment the temperature exceeds the programmed set point, preventing heat stress before it starts.
• Accurate temperature sensing: The included probe reads within ±2°F, giving you confidence that the controller will trip at the right moment rather than too early or too late.
• Adjustable hot start delay: HID and HPS lamps cannot restart instantly from a hot state. The built-in 1–30 minute delay lets the lamp cool sufficiently before power is restored, protecting both the lamp and ballast from premature re-strike attempts.
• HOLD feature: When conditions warrant keeping the lights off longer than the standard delay, the HOLD function overrides the timer so you can address the underlying heat issue without the system cycling on again automatically.
• Durable enclosure: The housing resists dust, rust, and moisture — important in grow rooms where humidity is routinely elevated and debris from media and plants is common.

Best Uses for the Titan Controls Zephyr 2

The Zephyr 2 fits into any sealed or semi-sealed growing environment where temperature excursions from high-intensity lighting are a concern. It works as a standalone safety device or alongside a broader environmental control setup.

• HID and HPS grow rooms: High-intensity discharge lamps generate significant heat. The Zephyr 2 automatically shuts them down when the room exceeds your set point, preventing wilting and plant stress during unexpected heat events.
• Grow tents: In a tent where air exchange can become restricted, temperatures can spike quickly. Installing the Zephyr 2 adds an automatic failsafe that acts faster than any manual check.
• Multi-light setups: At 15A/120V, the controller handles a typical single-circuit lighting load. Pair it with a multi-outlet lighting controller for larger rooms where you want centralized scheduling alongside high-temp protection.
• Unattended grows: For growers who cannot check on their rooms during every light cycle, the Zephyr 2 provides an automated layer of protection that operates independently of any other timer or controller on the circuit.
• Seedling and clone rooms: Young plants are especially sensitive to heat. The Zephyr 2 protects these critical early-growth stages when temperature tolerance is at its lowest.

Compatibility & Operating Range

The Zephyr 2 operates on a standard 120V / 60Hz circuit and is rated for up to 15 Amps continuous load. This covers most single-circuit HID, HPS, or CMH lighting setups commonly used in residential and small commercial grows.

The 6 ft temperature probe can be positioned at canopy height or wherever temperature readings are most relevant to your light-off decision. Because the controller only interrupts power to the connected load, it is compatible with any lighting fixture or device that runs on 120V and draws 15A or less.

The Zephyr 2 does not require a separate thermostat or environmental controller to function — it is a self-contained unit. However, it can operate in parallel with a broader climate management system. For example, growers who already use humidity management tools such as humidity packs alongside active airflow systems can add the Zephyr 2 as a dedicated temperature safety switch without any conflict.

The moisture-resistant enclosure makes the Zephyr 2 suitable for high-humidity environments typical of hydroponic and soil-based growing spaces. It is not rated for outdoor or fully submersible use.

Usage Guidelines

Proper placement and configuration of the Zephyr 2 determines how effectively it protects your grow space. Follow these guidelines to get reliable performance from the unit.

• Set point selection: Choose a temperature set point that is above your target canopy temperature but below the threshold where plant stress begins — typically in the range where you want the lights to cut out before damage occurs. The exact temperature depends on the strains and growth stage in your space.
• Probe placement: Position the 6 ft probe at or near canopy level and away from direct airflow outlets. Readings from a probe placed directly in front of a fan or air conditioning vent will not accurately reflect the ambient canopy temperature.
• Hot start delay setting: Set the 1–30 minute delay to match the re-strike requirements of your specific lamp type. HPS lamps typically need 10–20 minutes to cool before they will re-ignite reliably. Check your lamp manufacturer’s documentation for the recommended cool-down period.
• HOLD feature use: Engage the HOLD function when you are actively troubleshooting a heat issue and do not want the lights to come back on automatically. Disengage it once you have resolved the root cause and are ready to resume the normal light cycle.
• Load limit: Do not exceed 15 Amps on the controlled outlet. Verify the total amperage draw of all connected devices before wiring the Zephyr 2 into your setup.

Sources & Further Reading