Feedback on HLK-5M05 AC to DC circuit

[ilium007]

I am looking at using the 5V 1A HLK-5M05 AC-DC converter on an ESP32 based home automation project PCB. Schematic and HLK-5M05 datasheet attached.

I need some advice on sizing the MOV or if I should even be using an MOV vs a TVS diode. I am reading things about MOV's catching fire in peoples walls and roofs and TVS diodes being a more modern approach to surge protection.

In Australia we have 240VAC 50Hz (our nominal voltage here is around 253VAC shown on a digital meter).

Can anyone help with some advice on voltage suppression components and best practice?

[ilium007]

All of the other circuit examples using the HLK-5M05 are using MOV's with a series slow blow fuse, I'll just use the same. Are there 'go to' MOV's that people use for 240VAC RMS?

(240VAC * 0.707) * 20% = 407VAC

So should I just look for a 410VAC MOV with decent surge current capacity?

Is the 410VAC the clamping voltage or the max continuous voltage I see on datasheets?