Received the items in good physical condition. However, the the FR sensor is a bit wonky - it connects later and the PSI indicator is 1 to 2 off (Usual is around 33, so we are talking >5% error). No help from supplier apart from initial instructions. In summary, it works but the results cannot be relied on - so it is not really useful. Hence the low score.
Bad product. Solar charger do not work'at all. Water entrance inside sensor after one week use. Deasaster. Impossible to contact seller via the application. System do not work. Litige system do not work also.