Fully Automatic Single hole Water Spray Window Cleaning Robot Intelligent Household Electric Glass Cleaning Machine Remote Control Ultra-thin Window Cleaning Machine(Attention: This product presents 5 years of maintenance service, however the round-trip transportation charge must be borne by way of oneself. If you've any questions, you can touch visitor service. Place an order to purchase, default to understanding you return across any problems, don&;t rush to comment. We can contact customer support to reply your questions.) The energy delivery passes the CCC, CE, FCC, UL, ROHS safety checking out and certification with computerized spray Packing list: 1 host 1 energy wire + adapter, 1 remote control 1 battery pair 2 pairs of cleaning rings (4) 1 extension of 4 meters 1 safety rope 10 cleaning cloths 1 handbook (or English manual) 1 after-sales guarantee card Using way: 1. Wait 20 seconds after beginning until the blue mild stop flashing,Then birth working. Because the robotic want 20sec to find the glass plane. 2. Binding the safety rope when using, Prevent falling from excessive altitude. 3. Spray some water at the edge of the Mop when working, might be better effect. 4. When you obtain the item, please touch us when you have any questions, we are able to solve it for you.