Amazon is and remains my preferred shipping company! Nevertheless, some manufacturers supply about Amazon, defective equipment, probably to get rid of them! In my case, a time switch of Unitec was broken! It did not work in spite of patience and wait! I was forced to return the part which is problematic for me because I can not move well me and the post is located far from my apartment! Annoying, time consuming and not allowed! Blame only the manufacturer who does not control his merchandise carefully! Therefore, no recommendation for the purchase of Unitec timer!