When you have chosen the lights you require from our low voltage Connect Go range, it is essential that a power source is purchased to power them. This AA battery box (batteries not included) is manufactured specifically for use with this range & will power up to a maximum of 200 LEDs. Our small battery box features a 30cm green cable & boasts 4 different functions, which are listed below. Next to each function, you will find the maximum running time for each setting. This will, of course, vary depending on the brand of AA batteries used: 1. On-Steady (1 week) 2. On-Twinkle (2 weeks) 3. Timer-Steady (4 weeks) 4. Timer-Twinkle (8 weeks) Each time you switch the lights on, the built-in memory chip will automatically select the last function used. The handy timer function means that you can leave the lights switched on; they will remain illuminated for 6 hours, before turning off for 18 hours & then turning back on at the same time as the previous day.