Yes, the D11 is IP54 waterproof. But we recommend not to use it in heavy rain considered of safety. Please avoid putting the e-bike in water, or cleaning with a high-pressure water gun to avoid damage to electronic components and wiring due to soaking.
However, when passing through water pools, stagnant water, etc., pay attention to the height of wading not higher than the hub to prevent damage to the motor caused by water ingress. Do not wash with high-pressure water jets to avoid damage to electronic components and wiring due to wetness.