By switch you meant 3-pin sockets? Light neutral and switches neutral confused me 

This depends on house wiring. It can trip and it also cannot trip the CB

Wah, so bad ah the app?
I use Sonoff without the app, guess you have to search how to switch off after it had been triggered by motion.

Normally have to set to Mainland China server.
Slow? Connection problem maybe?

are you using android?
mine is usually okay. sometimes of course will lag really bad but like once in a blue moon only
anyway i hardly use the app to turn on/off things. they are either done thru automation or by siri shortcuts.

see my test today -

Turning On/Off the Dining Lights

Analog timer is so ... 80s! 🤣
I am going to change all my home switches to Sonoff T1 for light switches. It needs Neutral but I can pull Neutral from my aircons and heater switch next to them. The Sonoff switches especially the 2019 ones are nice but expensive if you are doing for the whole house

ur wiring must be new.. separated elcb for lightings and plugs 
u have to check 1st, if u got 2 elcb, mostly separated lightings and plugs neutral circuit. 20A switch will not use same neutral with lightings switch.
if 1 elcb and sharing neutral.. enjoys.. 

How many elcb u have?
Maybe ur ac also on separated circuit?

Ur elcbs may have different tripping current.

Are you sure it is ELCB not RCCB?

get sonoff 1 channel Inching/Self-locking Switch 5V 12V. it has a dry contact relay NO and NC and you can power it up using 12V DC from the autogate board or the backup battery. as long as it has esp8266 and a relay that would be suffice to control anything.

example image attached is my setup for my autogate and doorbell. i flashed the module with tasmota and control it with HA. also use esp8266 with 1 channel relay to sense the doorbell press.it runs custom firmware thru esphome. what u can do with that is limitless

i dunno about mi ecosystem. are you controlling your porch light using the board or just normal on/off switch?

if u are tapping porch light from the board,u must know that the board can activate the porch light when the gate is opening and will turn off after the gate is closed.

below taken from the user instructions of the dcmoto gfm925w
ps: photosensor always on the board that always dark

but if you have normal on/off switch then you should do the automation. sense the gate is opening then turn on the porch light and vice versa.

to sense the opening/closing gate, if you using the same board as mine, i would suggest to use optocoupler 12VDC. input side tap it on port on autogate board it says LAMP. then other side tap it onto any GPIO,for my case i will tap on my sonoff 1ch on GPIO14,GND,VCC. need abit soldering. to simplify it

open gate>board sense it then send 12VDC to port LAMP>opto isolator triggered>pull dow logic to low GPIO14>publish MQTT gate open. the logic low will retained as long as the gate is open

and after the gate is closed, the board will stop send 12VDC after 1min to port LAMP> opto isolator not triggered > logic high on GPIO14>publish MQTT gate closed.

sorry abit long to explain.

optocoupler example
what Fubar20 said is correct

Hey, currently renovating my house. I am considering installing smart switches. Any recommendations? My household mostly use apple, so home kit is a plus if not I think google home is ok.

Smart switch need to install neutral wire or not?

inching mode, 0.5s; it acts like a toggle switch

mine

Why cant just wrap plastic around aqara sensor and stick it to the door?
Maybe cos not heat proof?

How to wireless control the autogate. I tried to search anything that compatible with mihome app, the seller said my autogate is so called rolling code, cannot copy. Any ideas how to wireless control it?

For my gate house light i use those taobao solar light less than rm5 ones...super bright and long lasting (so far 6 months still ok)

See my list China and Malaysia server its different

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Malaysia server

Mainland China server

When I switch region the list change also. That why I keep asking I hewr you mention 2 hub so could be your hub individually connect to 2 different region.

See my mi door sensor if connect Malaysia i see 1 only if I connect to China server I see both.

Using China server as well and I would say the communication between devices are not slow, the thing that slow is when you want to check status or control through apps but sometimes the speed is acceptable, guess it's server load issue

Don't think it's possible or maybe I just don't know
Yeah sometimes it's slow for China server, if you can't bear it then need find another way.

is it to connect HA with aqara or xiaomi, we need to buy additional usb type zigbee connector?