RV Thermostat Replacement for Coleman Mach 8330D3351

Upgrade your RV’s climate control with the ouyanglong RV Digital Thermostat, a direct drop‑in replacement for Coleman Mach models 8330D3351, 8330A335, 8330B3351, and AM7812H. Designed for full‑time RV use, it plugs straight into the standard 12V DC HVAC wiring via a simple 9‑pin connector, eliminating the need for complex wiring diagrams or professional installation.

Featuring a bright, backlit LCD display that toggles between Celsius and Fahrenheit, this thermostat allows independent temperature control across up to four zones—ideal for managing bedroom slide‑outs and the main living area. The dual‑sealed ABS housing resists moisture, dust, and vibration, ensuring reliable performance in any travel environment. Whether you need heating or cooling, the unit supports both modes for all‑season comfort.