If you don't have an environmental control, the Versatile Vent is available with an aspirated temperature sensor and cable. It will open your vent or roll-up sidewall in four increments: closed, 1/4 open, 1/2 open and fully open.
*Manual override toggle switches
*Includes transformer and relays
*When paired with an integrated control (EnviroSTEP and VersiSTEP), vent opens and closes proportionally
*When paired with a staged control (MiniSTEP, 4-Stage and STEP Up), vent opens and closes incrementally, closed, 1/4 open, 1/2 open, and fully open
*Acts as lead control for up to six 2R Follower Controls
*No display in this mode
*Cabinet size 7.1" x 11.8" x 7.8"
*NEMA 4 rated cabinet and UL Listed