Vacuum pump for smartphone / underwater camera housing

VACUUM PUMP + ELECTRONIC VALVE SET FOR DIVING CHAMBER WITH VALVE. Please follow the steps below to use the product: 1) Install the chamber in the underwater chamber housing in a dry place with low humidity. 2) 15 to 30 minutes prior to the dive, remove the back plate cover to access the vacuum pump system opening (Photo 4 Figure 1) and ensure that the O-ring remains in place. 3) Attach the Vacuum Pump System to the opening by turning it clockwise (Figure 2). 4) Unscrew the electronic valve cover (Figure 3) and press the button to turn on the light inside the valve (Figure 4). 5) Attach the rubber part of the pump to the valve and begin to draw air (Figure 5). The red LED will start flashing, indicating the ambient air pressure. The hand pump is installed on the threaded valve body and air is pumped out of the unit until the red LED turns green and several more strokes are added to ensure sufficient vacuum. Pumping 2 or 3 more times ensures that the valve is not at the threshold limit. The pump is then removed and the protective cap is replaced to ensure tightness. 6) Observe the green light flashing for 15 minutes to ensure there are no air leaks. 7) Unscrew the valve cap to access the button and press it for a few seconds to release the pressure inside and turn off the valve light (Figure 4). 8) Remove the valve from the back plate and place the vacuum opening cap back in its original location, make sure the O-ring is still there (Figure 1). Your case is now ready to dive. Do not dive with the electronic valve