Thursday, December 9, 2021

Why you should use Z-Wave 800 instead of 700 series from power consuption point of view.

Silicon Labs recently announces new Z-Wave 800 series which provide better performance,  power consumption, and more secure features. I setup up Z-Wave FLiRS DoorLockKeyPad device on both Z-Wave 800 and 700 Kits majorly to compare power consumption. The transmitting power of both kits are set to 4 dbm and calibrated with conductive test for equality. I add both Z-Wave 800 and 700 FLiRS DoorLockKeyPad devices into PC controller and use Energy Profiler to profile power consumption for the following cases:

1. When there is no action on device, the average current of Z-Wave 800 and 700 FLiRS DoorLockKeyPad devices are 21.40uA and 32.09uA respectively. From this number, we can see 10.69uA differences, which means about 33.3% improvement on power consumption in frequently listening status.



2. If I sent get version version, which will wake up device to responds to the command, to both devices, the average power consumption would be 4.61mA and 10.72mA. This is 6.11mA difference and about  57% improvement in transmitting activity mode.



 These are just short tests but it's obvious and suggestive to move to Z-wave 800 immediately.

 

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