The Ace 4191698 Programmable Line Voltage Thermostat is a white, rectangular-shaped unit designed for wall mounting. It features a digital control style with push button functionality, allowing for easy adjustment of the thermostat. This programmable thermostat offers 5-2 day programming, with 4 periods per programmable day, suitable for controlling heating only. With a power source of line voltage and a voltage of 240V, this thermostat is compatible with universal heating systems and includes mounting hardware for easy installation. The thermostat also includes a digital display for clear temperature readings.