Delivery erfolgete Amazon Prime moderately quickly. Packaging was good. Whether the smoke detector is good or not, I can not judge. Hopefully I will also never be able to assess, because I would like to refrain from a house fire. But he appears to meet the screening criteria, I assume, the he will do properly in an emergency his service. What has me very upset, however, was that this smoke detector is sold at the hardware store around the corner for a quarter (!) The price offered here. Packaging and instructions are better, whether it is the included battery even at the hardware store goods, I can not say. Conclusion: Compare price! The few stars get the smoke detector for the miserable price-performance ratio.
