From inside (document excerpt):
Lux TX9000TS Programmable Thermostat Installation and Operating instructions. Technical Details: Touchscreen interface; 7 day programming – 4 periods per day; Default Energy Star approved program; 2 or 5 minute delay and Filter usage monitor.
1. FEATURES
• Extra Large Hybrid Touch Screen Display
• Audible Touch Confirmation
• EL Display Illumination
• Elegant Design
• 7 Day Programming
• Energy Star® Compliant
• 4 Periods per Day
• Battery Free Memory for All Programs And Settings
• Temporary Temperature Override
• Temperature Hold
• Keyboard Lockout
• F/C Temperature Display
• 12/24 Hr Clock Display
• Adjustable Temperature Differential / Cycle Rate
• Temperature Calibration
• 5/2 minute selectable minimum Run/Off time provides short cycle and compressor protection
CAUTION:
• The TX9000TS is protected against normal static electric discharges. However, in extremely dry weather you should touch a grounded metal object before the TX9000TS to minimize the risk of causing damage to the unit.
• Your thermostat is a precision instrument. Please handle it with care.
2. COMPATIBILITY
The TX9000TS can be used with most 24 volt gas, oil or electric heating and air conditioning systems, single stage heat pumps or gas millivolt heating systems. It cannot be used with 3 wire zone valves, 120V systems, or multistage systems. Ask your dealer for other LUX thermostats to
control those systems.
Source: www.luxproducts.com