Yes I’ll mount a fuse between AC and the HiLINK.
Also a 2 color LED, red on power on (plugged in) and green flashing when it can reach a gateway, green continue when the coffee machine/tv is on and a notification is transmitted.
These HiLinks are very good (tested before) , but I’ve never used them on a node, I’m more concerned about possible noise interference with that hall sensor, test before mounting everything 
- http://www.hlktech.net/product_detail.php?ProId=54
- http://www.ebay.com/itm/2Pcs-HLK-PM01-AC-DC-220V-to-5V-Step-Down-Power-Supply-Module-Household-Switch-CZ-/162089724395
up to 200 mA load the voltage and ripple are fine.
- update : now powering the feather clone with an external HiLINK Hlk-PM03 3V3 AC-DC module (instead of 5v)
