is an digital second-timer. You can use it to switch any device on or off for a few seconds. This is ideal for instance if you want to water your crop. You set for how many seconds the pump comes on and water your crop. You can use the DV101D to water the crop every quarter of an hour, for example. The DV101D is protected by a 6Amp thermal fuse. The thermal fuse ensures that the DV101D switches off with a short-circuit or overloading. the advantage of the thermal fuse is that when the problem has been fixed you only need to press the "reset" button and the DV101D starts working agian.
The DV101A works on 230v. it has a maximum power of 6Amp.