Titan Controls Tali 3-in-1 VPD Sensor

Precision Environmental Monitoring — Temperature, Humidity, and Pressure in One VPD Sensor

The Titan Controls Tali 3-in-1 VPD Sensor gives growers a direct, accurate readout of the three environmental parameters that drive vapor pressure deficit calculations: temperature, relative humidity, and air pressure. Rather than calculating VPD manually or relying on single-metric sensors, the Tali synthesizes all three readings in real time and displays the calculated VPD value directly on its LED screen.

Key Features & Benefits

• 3-in-1 Measurement: Simultaneously measures temperature, relative humidity, and air pressure — every input required for accurate VPD calculation in a single device.
• Calculated VPD Readout: Displays the VPD value directly so growers can instantly assess plant transpiration conditions without manual calculations.
• High Accuracy Sensors: Temperature accuracy of ±0.5°C, relative humidity accuracy of ±5% RH, and VPD accuracy of ±100 Pa for reliable, actionable readings.
• Wide Operating Range: Functions across a 0°C to 50°C operating range, covering the full span of grow room conditions.
• Class 2 Circuit Compatible: Designed for use in Class 2 or Limited Energy circuits for safe integration with compatible Titan Controls systems.

Who Should Use This

Essential for data-driven cultivators who actively manage VPD to optimize transpiration, nutrient uptake, and yield potential — ideal for growers using Titan Controls environmental controllers who want a dedicated, accurate sensor for canopy-level VPD monitoring.

Compatibility

Designed for Class 2 or Limited Energy circuits. Compatible with Titan Controls environmental control systems that accept this sensor input. Dimensions: 7.48in L x 7.48in W x 4.33in H. Verify compatibility with your specific controller before ordering.

About Titan Controls

Titan Controls, a Hawthorne Gardening Company brand, built the Tali as a single dedicated sensor for canopy-level VPD monitoring, rather than requiring growers to combine separate temperature, humidity, and pressure instruments and calculate VPD by hand.

Frequently Asked Questions

What is VPD and why does it matter for growing?

Vapor Pressure Deficit is the difference between the moisture the air can hold and how much it actually holds. It directly drives plant transpiration — too low and plants close stomata, too high and plants stress from water loss. Managing VPD optimizes photosynthesis, transpiration, and nutrient uptake.

Does the Tali sensor calculate VPD automatically?

Yes — the Tali measures temperature, humidity, and air pressure simultaneously and calculates the VPD value in real time. It displays that value directly on the LED screen, with no manual calculation required.

Where should I position the Tali sensor in my grow room?

For the most relevant readings, position it at canopy level where plants experience the actual temperature and humidity conditions driving their transpiration. Avoid placement near air inlets, fans, or lights that create localized microclimates.

When would I add the Tali instead of relying on my environmental controller's built-in sensor?

Add the Tali when you want a dedicated, higher-accuracy VPD reading at canopy level rather than a single built-in sensor located elsewhere in the room. Multiple zones or larger rooms especially benefit from a canopy-positioned sensor separate from the main controller.