Active Air Hygro-Thermometer

Jumbo-Display Hygro-Thermometer for Wall or Bench Mounting

A thermometer display that is hard to read from across a room does not do much good once it is mounted on a wall or tucked into a grow tent corner. This Active Air hygro-thermometer uses a jumbo, easy-to-read display for current temperature and humidity, alongside simultaneous max/min memory so past swings stay visible without a separate log.

It auto-switches between indoor and outdoor readings using a 3-meter remote temperature sensor, and can be propped up on a surface or wall-mounted for hands-free monitoring.

Key Features & Benefits

• Jumbo Display — Large number LCD display readable from a distance.
• Max/Min Memory — Shows current readings alongside simultaneous max and min memory.
• Auto-Switch Display — Automatically switches between indoor and outdoor temperature readings.
• 3-Meter Remote Sensor — Temperature sensor can be placed up to 3 meters away.
• Wall-Mountable — Can be propped on a surface or wall-mounted for hands-free reading.

Who Should Use This Hygro-Thermometer

Growers who want readings visible from across a room, or who prefer wall-mounting a monitor near their plants, will find this hygro-thermometer's jumbo display convenient.

About Active Air

Active Air is Hydrofarm's environmental-monitoring and ventilation-accessory line, covering thermometers, hygrometers, and related grow room climate hardware.

Frequently Asked Questions

How far away can the remote sensor be placed?

The remote temperature sensor can be placed up to 3 meters from the main display. That range covers most single-room or grow tent monitoring setups.

Does the display show past readings?

Yes, it shows simultaneous max and min memory alongside the current reading rather than only the live number. That makes it easier to catch a temperature or humidity spike that happened while no one was watching.

Can this be wall-mounted?

Yes, it can be wall-mounted or propped up on a workspace or shelf. Wall-mounting keeps the display visible without taking up bench space.

How does the auto-switch between indoor and outdoor readings work?

The unit automatically alternates the display between the indoor reading from the main body and the outdoor reading from the remote sensor. This removes the need to manually toggle between the two or run two separate thermometers.

Is the display easy to read from a distance?

Yes, it uses a jumbo number LCD display designed to be legible from across a room. That makes it practical for wall-mounted placement where a smaller display would be hard to check at a glance.