Confused about power consumption of HC-SR501 PIR sensor


According tot the datasheet

Voltage 5-20V
Power consumption 65ma

But later on

Working voltage range: 4.5-20V
Quiescent Current: 50 uA

So now I'm confused what is meant by power consumption (shouldn't that be in (milli)Watts) and quiescent current?

I did measure the PIR sensor and it draws 30mA while nothing is detected and 200mA when a movement is detected.

Reason for asking is that I'm looking for a battery powered solution for a wireless movement sensor. Thinking of a nRF24L01+, the mentioned pir sensor and pro mini or maybe an ATtiny.

Alternative is to pull 100 meter cable and use RS485 and power, but I'm not too eager on that.