Timeguard TRT034N 7 Day Digital Programmer - 1 Channel Single channel programmer (for use with room thermostats) with an easy view blue luminescent screen. Simple push button setting and select modes with full screen information providing automatic time control for domestic central heating applications. 7 day programming for use with room thermostat. 3 timed control periods per day (5 day and 2 or 7 day programming). Programme copy function. 1, 2 and 3 hour boost function. Holiday mode. Always ON/OFF override mode. Blue LED screen illuminates upon setting. Automatic summer/winter changeover. Change over contacts. 7 Day factory fitted rechargeable battery backup. Switch Rating: 3(1)A. Technical Specification Operating Voltage: 230V AC - 50Hz Timer Mode: 7 Day + Boost Boost Duration: 1, 2 or 3 Hours Current Rating: 3 (1) A Switch Type: Single Pole, Double Throw (SPDT) Operating Temperature Range: 0°C to 50°C Micro Disconnection: Type 1.B Control Action EC