The current of TX (MCS7) is 150mA~200mA and that of RX is 60mA.
The current power consumption in three low power consumption modes is shown in table below.
Remark:
DTIM1 means that, in the DTIM period of 1, devises will wake up to receive the beacons within 3 ms after sleeping for 100ms.
DTIM3 means that, in the DTIM period of 3, devises will wake up to receive the beacons within 3 ms after sleeping for 300ms.
DTIM10 means that, in the DTIM period of 10, devises will wake up to receive the beacons within 3 ms after sleeping for 1s.
DTIM n means that, in the DTIM period of n, devises will wake up to receive the beacons within 3 ms after sleeping for n*100ms.
It is practicable that two 1.5V dry batteries deliver the power supply. It’s recommended to select Deep-sleep, the low power consumption mode, while powered by batteries.
For more applications of low power consumption sensors, please refer to ESP8266 Low Power Sensor Demo on github.