Venstar. The Slimline Platinum T1900 residential thermostat with built-in humidity control allows the thermostat to automatically control temperature as well as humidity. The programmable seven-day-per-week scheduling allows for four time periods per day, which helps with reduce energy usage. The thermostat's key features include a programmable output for control of outdoor lighting systems, attic fans, and auxiliary devices. In addition, it is equipped with a drain pan alert, enabling the thermostat to shut down the cooling system in the event of a leak. 818.812.9930. www.venstar.com.