Timeguard TRT033N Digital Room Thermostat with Night Set-Back Digital room thermostat with easy visible blue luminescent screen displaying current room temperature. Simple +/- push button temperature adjustment illuminates display on setting providing automatic temperature control for all central heating applications. Night set-back and frost protection modes help improve system efficiency and reduce running costs. The TRT033N display is powered using 2x 1.5V AA batteries supplied. Digital room temperature display, illuminated on setting. Easy +/- illuminated push button settings. Easy view temperature display illuminated on setting. Frost protection setting. 10°C to 30°C set temperature range. Temperature swing adjustment (using DIP switches) between 0.5°C and 1°C. PID control. Voltage free change over contacts. Display battery powered using 2x 1.5V AA. Switch Rating: 3(1)A. Technical Specification Operating Voltage: 230V AC - 50Hz Current Rating: 3 (1) A Swi