24 Hour Programmable Timer Privacy Notice Excellent Service......Attention to Detail..... Clear Communication..... The Vizia+ 24-Hour Programmable Timer features a built-in astronomical clock that automatically adjusts the timer to local sunrise and sunset times for year-round efficient lighting control. The wall-mounted timer is easy to program for precise automation of all indoor and outdoor lighting. With the random option setting, lights can be programmed to turn ON and OFF at varying intervals within a 15-minute range, giving the home a consistent and secure appearance. The device is particularly useful for second residences, where owners may not have easy access to lighting timers.