Are you looking to build your own Martha chamber, or contained fruiting chamber? If so, the Inkbird ITC-608T Dual Stage Temp and Humidity Controller is one of the best options available.
Inkbird ITC-608T 3 in 1 Multi-functional Temperature & Humidity Controller
- Pre-Wired AC Dual Stage Outlet Thermostat with 12 Period Time Stage,1800 W, ETL Listed.
- Three versions can be chose: Temperature Version, Humidity Version and Temperature & Humidity Version.
- Plug and play design, easy to use.
- Be able to control temperature and humidity at the same time.
- Be able to connect with humidifier and dehumidifier equipment at the same time.
- Be able to connect with refrigeration/ heating and humidifier/dehumidifier equipment at the same time.
- Heating/Cooling function could be set separately for refrigeration and heating to protect temperature controller from violent change. Same as humidity Control.