Latching： Press the lock button to turn on the power, then press the power button again to turn off the power. Waterproof class: 12/16/19mm: IP66； 22mm: IP67. Hole Size: 12mm / 16mm / 19mm / 22mm. Long-lasting waterproof, the internal use of red waterproof sealing ring, wind and rain waterproof performance is better.
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