Good and simple thing to understand how well you have working ventilation in newly building. No, it is not accurate to with her testimony to disassembly, but understanding gives. Propeller a little not balanced, if you rotate case-propeller in place. But for the price of this device it can forgive all. And lights! It is!

Shipping fast, without battery. Very basic. By true, bought really unintentionally. I guess to look at the product and want to move to another screen would touch the button "buy now" But supposedly should have to be confirmed the purchase, I don't know well that happened. Have not returned due to their low price.

Great product, works as it should. But the battery is not included, need to buy separately, and it is. Costs. Dolgovato went, but it is clear in the present situation. Seller recommend.

The device works, instructions in English, in the course of delivery changed address to pick up on the other side of town in Pyaterochka, and everything is OK

Arrived in reasonable time. I fitted the battery & tried it out straight away & it worked great. It will be a very useful device on my boat.