Venstar T3700 Voyager Residential Thermostat — WiFi-Ready (works when ACC-VWF1 module installed), White, 6.3 x 5 x 2.3

Compact residential thermostat with a large, easy-to-read backlit display and adjustable backlight intensity. A bi-color LED clearly signals heating or cooling demand, while color-coded, backlit buttons and legends simplify operation. Supports 2 heat stages & 1 cool stage and offers flexible scheduling: choose 7-Day, 5+2 Day, 1-Day programming or run it non-programmed. Features Venstar’s “Simple as you want operationTM” for straightforward control. System mode is switchable between Auto Changeover, Heat Only, or Cool Only. Includes an API for 3rd party monitor and control and a scrolling display that can be set to English, Spanish, or French. If only four thermostat wires are present, the Add-A-Wire accessory (PN# ACC0410) may be required — installation guidance is available in the Add-A-Wire installation video. Wi‑Fi functionality requires the WiFi Module (Part Number: ACC-VWF1).