Weekly timer TOP Digital 230V 16A 2-channel 2TE Digital timer SENTRON 7LF4 for the time-controlled switching of electrical consumers, e.g. lighting. The digital timers from Siemens have many and very flexible adjustable on and off times. The 7LF4 timers are available in various versions as Mini, Top, Profi or Astro with automatic sun tracking control. 7LF timers - safety, comfort and energy saving.