Qubit Systems provides numerous environmental sensors for monitoring of environmental parameters such as temperature, pH, salinity, soil moisture, relative humidity, dissolved O2 and CO2, plus light quality and quantity. These sensors play a crucial role as part of our Q-Box Research Packages. We also provide gas analyzers for monitoring O2, CO2, H2, CH4 levels in the field and inside environmental chambers. Our gas control systems employ these gas analyzers in feedback control of the chamber atmosphere.