Leak sensor behave like door sensor

I have

  1. Wyze home security hub connect internet work well with motion sensor
  2. Just received 3 leak sensors, but neither sensor body nor with probe detect any water event(I put either one into a cup of water)
  3. since probe end to sensor body is with magnet, every time I connect and disconnect probe, sensor body LED blink and app show leak event
  4. I use magnet to close to senor probe contact on sensor body, it trigger leak event, it more like door sensor to me
  5. my leak sensor firmware is
  6. my hub firmware is