Not counting factory installed (Which seems not to be an option on motor homes) I am familiar with 3 systems, one by experience 2 by research
In order of complexity
1: Tire Sentry: Advantages, are ease of installation, and ease of movement vehicle to vehicle, Sensors are battery operated radio transmitters which replace your standard valve caps. I've never seen the receiver
This system alerts you when tire pressure drops below a set point (you pick the set point at time of purchase)
2: Pressure Pro This is the system I have, Advantages Installation is the same as above, plus it reports PRESSURE to the dash monitor, Dash monitor is very thin, mounts with Velcro tape to any flat spot or with spring clips to a sun visor or just about any way you wish to mount it.
Alerts happen when tire pressure drops a pre-set percentage (I think 12.5) and to "Set" the sender simply remove it for one minute from the tire (unscrew the valve cap) and replace it, I suggest doing this on a cold morning. Again, ease of movement is there and you can "Turn off" either the Motor Home or the towed (And transport the receiver between them) Major disadvantage, batteries in sensors are NOT user replaceable.
3; Smart Tire.
Installation requires professional help as the wheels need to be removed from the vehicle and at least one bead broken down so the sensor can be installed INSIDE the tire. The sensor straps to the rim, can be damaged in a "Run Flat" condition and will interfer with a Tyron Run Flat safety band if you have one. Transfer to a new vehicle requires tires be removed from BOTH vehicles (may be cheaper to buy new sensors)
Cars with low profile tires.... This system may well not fit (The others do)
Advantage: Monitors both pressure and temperature, Alarms on high or low on both measurements.