TrolMaster Hydro-X Thermostat Station 2 (heat pump and conventional HVAC) (TS-2) Fans + Air Movers One of the best CO2

One of the best CO2 Regulators available in the marketplace

Easy Install + Service: Compact body mounts fast and cleans between cycles

5" x 5" Packet: Lies flat across a turkey bag or tote instead of eating into usable volume

This one gives you a number

TrolMaster Hydro-X Thermostat Station 2 (heat pump and conventional HVAC) (TS-2) Fans + Air Movers One of the best CO2TS 2 Thermostat Station is specifically designed to replace the traditional thermostat to control four system types of equipment (Heat Cool, Cool only, Heat only, Heat pump). It will control your four system equipments by Day Night setpoint base on the photocell status. Connect the TS 2 to where your thermostat is on the wall using preexisting wires, now you can use the TS 2 in conjunction with the Hydro X to control heating & cooling equipments.