2, the gas source, vacuum source and mold tooling connected to the power supply.
3, the intelligent doorbell shell placed in the tooling sealed mold.
4, test pressure 12KPA, air intake time of 3 seconds, pressure stabilization time of 6 seconds, test time of 3 seconds, the leakage value of 0.02KPA.
5, start the Hillier Instruments SLA airtightness tester, the instrument controls the mold of the mold of the tooling on the mold downward pressure to seal the smart doorbell inside the mold, and then the smart doorbell shell inside the mold for inflatable, stabilized pressure, test operations.