Newlec economy 7 analogue timeswitch designed for use with economy 7 off peak rate overnight electricity plans 24hr segment time setting dial with 15 minute switching intervals for customised programming Interchangeable with previous Newlec models, Horstmann and Sangamo economy 7 units Supplied with a standard size economy 7 wall box with industry standard plug-in connections 4 boost demand options – 15, 30 minutes, 1 and 2 hours Adjustable on/off setting Off peak and boost indicator lights Designed to take full advantage of cheap rate night time electricity Automatic clock with summer and winter settings 2 year battery reserve