Table 1.

Power consumption for each component on the sensor node (current value from datasheet).

Function	Device	Wake-Up Time (s)	Idle/transmit Current (mA)	Sleep Current (µA)
RF module	XBee	15	29/120	2.5
MCU	ATMega328	15.5	4.35	200
Humidity	HIH5030	15	0.2	0
Temperature	MCP9700	15	0.006	0
CO2	GC-0012	15	1.5	0
CO	MiCS-5121WP	10.5	30.7	0
LDO	MCP1700	15.5	0.0016	1.6
	Total		65.7576/156.7576	204.1

RF: radiofrequency; MCU: microcontroller unit; LDO: low drop-out.