The Salus RT520RF Boiler Plus Compliant 7 Day 5/2 Programmable Thermostat in White is a reliable and efficient home heating system. With features such as a digital display, backlit screen, low battery indicator, and LCD screen, this thermostat offers convenient control over your heating schedule. The programmable 7-day system ensures that your home remains comfortable while also helping to reduce energy usage. Powered by AA batteries, this thermostat is a practical and effective choice for any household looking to improve their heating system.