Digital Day/Night Fans Speed controller

Temperature-Based Variable Fan Speed Control

The BETA-2 controls variable-speed fans by adjusting fan speed based on the current temperature, increasing speed for more cooling or decreasing it when less cooling is needed.

Managing fan speed this way is an efficient method for handling heat buildup inside an enclosed grow space, rather than running fans at full speed continuously.

Key Features & Benefits

• Speed Control Range 25-100% — Adjusts fan output anywhere across that range based on temperature.
• Built-In Photocell — Automatically detects day and night status to switch modes.
• 16 ft Temperature Sensor — Position the sensor close to the plant canopy for accurate readings.
• Simple LED Display — Easy to read and adjust without a complicated menu.

Who Should Use the BETA-2 Fan Speed Controller

Growers running variable-speed fans who want temperature-based speed adjustments instead of a simple on/off control.

Specifications

Operates on 120 volts AC with a triac output switch and a 6A/250V fuse rating. Temperature accuracy is within ±1°F. Includes a 1.8m power cord and 16 ft sensor cable.

Frequently Asked Questions

What fan speed range does the BETA-2 support?

It adjusts variable-speed fans anywhere from 25% to 100% output.

How does it know when to increase fan speed?

It increases speed as temperature rises and decreases it as temperature falls, based on your setpoint.

Does the BETA-2 distinguish day and night?

Yes, a built-in photocell automatically detects day and night status.

Where should I place the temperature sensor?

Close to the plant canopy, using the included 16 ft sensor cable.