Timeguard 7 Day Slimline Electronic Immersion Timeswitch

7 Day Slimline Electronic Immersion Timeswitch. Features include: Special 'easy slide' programme cover to prevent accidental programme changes, 4 on 4 off easy set programme periods per day, 28 on 28 off programmes per week, Shortest switching time 1 minute, Extra large 'Easy view' screen with blue LED backlighting, Red LED 'Mains On' and green LED output indicators for easy viewing, Large easy push programme buttons, Self cancelling override button to next programme change, Optional 1 and 2 hour boost button, Automatic summer/winter changeover, 720 hours rechargeable memory back-up.