PIR Sensor False Alarm every hour

[inland coral]

I've a PIR sensor hooker to an ESP8266 running esphome.
Somehow it gives a false positive every hour at the exact same time. What could be the reason?

[proper smelt]

Hi @inland coral,
Do you have a Cuckoo clock?
Try covering the sensor and see if it still does it.

[inland coral]

I don't have a cuckoo clock. I'll try covering the sensor