The RS300 Slimline® Premier Family Thermostats are back, backlit, and better than ever! There are four RS300N non-programmable models with the traditional day/night dual set-point configurations, and the two RS300P models are five-one-one-day or seven-day programmable. The pushbuttons on the thermostat can be locked to give restricted override capabilities. Most models also have two digital inputs for equipment fault and other alerts, and setback terminals using any time clock enables automatic energy savings. The advanced remote sensor allows up to six indoor remote sensors, an outdoor sensor, and up to three auxiliary sensors. Economizer control is included on two “E” models.