Do not count every room and in addition those that are counted are not necessarily in the right category. After 1/2 hours from start up and various tests, I gave this product in its packaging and referred (A CHARGE FOR MY PRODUCT DOES NOT WORK) to the seller PEARL (SELLER AVOID, see also his responses to irrelevant matters).
Note no real influence on the note: Packing already opened product, the product already used / tested (leading brands around the screws of battery covers).