X-10 Mini Timer MT522. Its a Mini Controller and a Timer all in one! Lets you instantly control 8 X-10 Modules and program 4 Modules to go off at specific times, up to twice a day. Has All Lights On button and dims lights too! Can turn lights on at random times for added security. Has battery back-up and alarm buzzer with Snooze feature. Looks and operates like new.