The Danfoss RET2001RF + RX1-S Battery Powered RF Digital Thermostat is a white, wall-mounted thermostat with a wireless control style and 4 heat stages. It features a digital display, battery backup, and frost protection properties. The thermostat is programmable for 7 days a week with 6 periods per day and has a sleek rectangular shape made of plastic. With its compatibility with universal products and weather-resistant resistance properties, this Danfoss thermostat is a reliable choice for regulating your home temperature efficiently.