Pymeter PY-20TH Humidity and Temperature Controller Review

A dual-outlet temperature and humidity controller with a shared sensor and LCD readout for greenhouse fans, humidifiers, and propagation gear.

Seller pricing varies Updated May 17, 2026

Bottom line

The Pymeter PY-20TH gives greenhouse growers a compact way to connect temperature and humidity readings with controlled outlets.

Pymeter PY-20TH humidity and temperature controller with sensor and two outlets

What this review covers

A combined controller suits a greenhouse corner where air movement and moisture support one plant-care rhythm. The setup feels steady when the sensor location, outlet load, and cord path are planned before use.

The upside

  • Temperature and humidity readings sit on one controller face.
  • Two controlled outlets support paired air and moisture routines.
  • The sensor cable lets the reading happen near the growing area.

The tradeoffs

  • The controls ask for careful setup before a device is plugged in.
  • Humidity gear and power cords need a dry, tidy route.

Fit and feel

Good match:

This controller fits greenhouse shelves, plant rooms, and propagation corners where a gardener wants temperature and humidity readings tied to plugged-in equipment.

What to know:

Cord routing matters around water, misting, damp benches, and greenhouse floors. Keep the controller and outlets dry, keep drip paths away from plugs, and follow the connected device labels.

Check Pymeter PY-20TH Humidity and Temperature Controller

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Full review

Read temperature and humidity in one place

Greenhouse care often involves temperature and humidity together. The Pymeter PY-20TH gives both readings a place on one controller and gives two outlets clear jobs.

That layout can support a fan, heater, humidifier, or dehumidifier when the setup calls for controlled equipment. The sensor belongs near the plant area, while the outlets and cords belong in a dry, protected route.

Dual outlets make the setup intentional

Two controlled outlets give gardeners a way to plan air and moisture together. One outlet can serve temperature control, and one outlet can serve humidity control, depending on the devices and the settings.

The controller asks for careful setup. Read the product instructions, match each device rating, and confirm the control points before leaving equipment in the routine.

Good match

This controller fits greenhouse shelves, plant rooms, and propagation corners where a gardener wants temperature and humidity readings tied to plugged-in equipment.

What to know

Cord routing matters around water, misting, damp benches, and greenhouse floors. Keep the controller and outlets dry, keep drip paths away from plugs, and follow the connected device labels.