The CH7400 Wireless Digital PTAC Thermostat is a premium energy-saving solution tailored for the hospitality industry and commercial HVAC markets. This universal system includes a sleek, wall-mounted negative touch screen and a base module that seamlessly integrates with most PTAC brands. Whether for new installations or retrofitting, it offers precise 7-day programmable schedules and high/low fan speed control, ensuring guest comfort while optimizing operational costs. Model No.: CH7400 (Smart RF/WiFi Series) Universal Compatibility: Works with Heat Pump (with or without Aux), Gas, Oil, or Electric Furnace systems (Up to 2H/2C). C-Wire Required: Ensures stable, continuous power for smart features. Smart Ecosystem: Fully compatible with Amazon Alexa and Google Assistant for voice control. Seamless Remote Access: Manage settings and temperature via the free mobile app (iOS & Android) from anywhere. Multi-Stage Control: Precision management of two stages of heating and two stages of cooling.