Thanks
my first order was for 6 units. when I received it, one of the units didn't work. the seller said that just if I will order something he will be able to send a replacement. I didn't like the answer, so he promised that if I will order 1 unit, he will send 3. that what happened, and I have received the 3 units. I don't understand why do I have to buy more if the unit I received didn't work, and why he didn't want to send a replacement if I won't spend more money. at the end, the seller kept his promise to send 3