Ultimate plug-and-play replacement for your existing stock RV thermostat. Designed for universal compatibility, it seamlessly integrates with a wide range of HVAC systems. Manage your RV's HVAC, lights, outlets, sensors, and more- right from the Waltech mobile app. Featuring a built-in Android OS, advanced pet monitoring, room temperature alerts, and global connectivity via a built-in SIM card. Waltech Vision 2.0 transforms your RV into a smart, connected haven. WalTech Vision 2.0 is compatible with most new and old RV HVAC systems. Features: Built-in Cellular & WiFi - Always On, Operates 7.5V - 32V Both AC & DC, IOS & Android Mobile App, Connect Bluetooth Devices & Sensors.