How can I improve range of IQ Flood sensors?

The panel did not report that the sensor was not reporting after 24hrs either. DOes supervision not mean “I will let you know if I don’t hear from this sensor”? What does it mean in the IQ4 panel context?

This means either the panel did indeed receive supervision signals from the sensor or potentially a different issue is present, such as an incorrect sensor ID. This would mean the panel is listening for a different sensor.

If you bring the sensor close to the panel, do tamper signals get received? If not, another issue is present instead of range or attenuation.

How do I set up sump pump monitoring

Is the PowerG 9985 the correct/best range sensor for my IQ4?

PowerG sensors have roughly 4 times the range of other models for the IQ Panel 4. Yes, that is the flood sensor model.