Of what? As far as the atmosphere (air) around our rig, I have a personal weather station on a pole on the ladder. A less expensive alternative would be one of the wireless indoor/outdoor thermometers. Inside the rig there is the monitoring station for the PWS which gives inside temp as well as the thermometers and temp displays on both thermostats.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015