The BS-812 is a programmable room thermostat with battery from Olympia Electronics. It has a Boiler command with selectable time. 

• Ease of use
• Easy to read display
• Greek Menu
• Long battery life (>3 years).
• 3 operating modes: manual, daily, weekly.
• Easy program import.
• Multi-indicator display with illumination.
• Clock, calendar.
• Keyboard lock.
• Selection of upper and lower limits for manual temperature selection.
• Boiler command with selectable time.
• Heating or cooling function.
• Temperature Measurement Range: 0.0 to 99.9 °C
• Temperature Selection Range: 6.0 to 30.0 °C