Digital Humidity Controller Outlet Plug 120v 15A Humidistat Countdown Control Switch for Greenhouse Reptile Bathroom Vent Fan Humidifier Dehumidifier

Price: $35.99
(as of Oct 19, 2025 08:46:40 UTC – Details)

Product description

Humidification mode

Set start humidity < stop humidity. KT3300 will work in humidification mode. Output connected to humidifier.

For example, if start humidity = 50 and stop humidity = 60, the humidifier will activate when measured humidity < 50 and deactivate when measured humidity ≥ 60. The humidifier will activate again when measured humidity drops below 50.

Dehumidification mode

Set start humidity > stop humidity. KT3300 will work in dehumidification mode. Output connected to dehumidifier.

For example, if start humidity = 60 and stop humidity = 50 , the dehumidifier will activate when measured humidity > 60 and deactivate when measured humidity ≤ 50. The dehumidifier will activate again when measured humidity rises above 60.

Countdown OFF/ON mode

Countdown accuracy: <10min

Maximum countdown time: 99hours 59minutes

1. Turn off the humidity control when the countdown is complete.

2. Turn on the humidity control when the countdown is complete.

Humidity Sensor

Humidity Control Range : 20~95%RH

Control accuracy: ±5%RH

Sensor Length: 135mm

Full view 360° LCD display

See a variety of key data at a glance

Memory function

After a power outage, KT3300 setup parameters will be saved automatically. In M2 or M3 mode, the timer will restart with the preset countdown when power is restored.

Humidity Calibration

1. Press and hold M for 3s, the screen will display 0%RH and flash.

2. Press + or – to adjust the value in the range -10-10%RH

3. Press and hold M to save and exit.

It is widely used in intelligent control applications, such as refrigeration, brewing, reptile, aquacultures, greenhouses and households.

【Plug-and-Play Design】The humidity controller is easy to use, just plug into your devices and set the target humidity to work.
【Countdown control】Additional humidity control mode can set to turn off or turn on the humidity control when the countdown is complete
【Humidity Range】Humidity Control Range : 20%-95%RH ; Accuracy: ±5%RH.
【Memory function】After a power outage, setup parameters will be saved automatically.
【Wide Functions】The humidity controller can control any 100-240V, 15A (Max.) humidifier, dehumidifier or fan.