I'm planning to implement home automation using z-wave protocol, probably using vera edge as the controller. Not much device using Malaysia Z-wave frequency, so probably using EU frequency. What I plan to do:
1. security: integrate with NAS, IP camera and Alarm system. Compatibility is important for the communications of the devices. Thus, I'm getting Asustor NAS and Hikvision IP camera(with motion detect, alarm IO and audio IO) which is compatible with the Asustor ADM. Asustor will send email and SMS(need subscription) once motion detected from IP camera. eg: motion detected on the window area (before someone go near the window even before he touch the window). Alarm IO of the IP camera will connect the Z-wave binary sensor which connected to the Vera Edge. Then, Vera Edge trigger the outdoor flood light to deter the potential burglar. In second stage when he insist to break in from the window, alarm came in when trigger the sensor on the window. Of course all these will be under monitor remotely, looking through ip camera from mobile phone once the first stage triggered (received email & sms). PIR sensors will be installed indoor too, including the attic in case the first line of defend breached.

2. Automation: Since the alarm is connected to Vera Edge, PIR from the alarm can be used to automate the switching on or off the lighting during the alarm disarmed/armed stay mode. (eg: walk to kitchen, movement detected, switch light on. After no motion of period of time, switch off light to save energy.)
Another thing I plan to get is the z-wave smoke detector so I will be notified when something is burning in the house. Not sure if there is smoke detector + air quality monitor that include detection of gas leakage, if there is such product is even better can alert when gas leak from kitchen.

Besides the above, normal stuff like lighting switch and some wall plug switch will be z-wave enabled too. Zwave IR remote is a nice touch up to control gadget that is IR controlled too. As for the lock, I will use the traditional lock. Because I'm kind of a paranoid just in case the system is being hacked or breached  Therefore, any remotely accessed content such as IP cam feed will be tunnel through VPN from remote to home. No port will open/forward, just the VPN. Guest WiFi will be VLAN separated so visitor will not have direct contact with the system.

All the above will be  DIY including the alarm because need to use compatible alarm system but still need to figure out where to get all the components

Since there are plenty of different brand of wireless Smart Home system in the market such as Orvibo, LifeSmart, Broadlink and etc. Which brand is the most popular, reliable, more functioning and future expansion?

Next is pairing it with the EWeLink App. Press the Pairing button on the Sonoff.
You select the Sonoff to pair with

Go to your smartphone's WIFI setting and select the ITEADS......device

Then it will start pairing -

Btw ozak, I connected it to my Wifi Guest Network which has limited excess (can only go to Internet) and it works. 

You can control the Sonoff device in three ways - Countdown Timer, Timer Schedule, and Scene
Countdown timer - you set how many days, hours or minutes and it will countdown to either On or Off your device

Timer Schedule - this one you set it to go On or Off and certain dates, days  and time - yes you can skip certain days

Scene - you can set either a Smart Scene or Non-Smart Scene. Smart Scene is like you got a temperature sensor and you can set the sensor to send a signal to the Sonoff. Non-Smart Scene - I think it uses IFTTT commands - I am not sure, I havent try this out yet
One con - I cant control a group of things - For example I have two Sonoff and it allows me to group this two devices but I cant control it like one click to turn On or Off this entire group of devices.
As you can see here, you can only toggle one device not a group

Overall I am happy with it, anyway its darn cheap at only $5 each, what more can you expect?

My IT expert friend told me, consumer type modem router are not stable. You need to reset once a while.

You want good wan will cost RM20k. Which is for industrial use.

I'm not sure since I also just plug in neutral wire (the capacitor is included with switch)
So far all the wifi requires neutral for installation, and that capacitor probably acts as some kind bridge I guess from neutral to live wire. I'm no electrician so I assumed that anyway

For any RF switch, they normally just require live wire connection.
Wifi switch is still the better option though, you get on/off status and can also be controlled with voice assistant like alexa/google assistant. That's what sonoff t1 special since it offers both, I don't see any other brand yet doing this.

I'll check that again once I'm home.

Ok thanks 🙏🏻

Any reference how to use capacitor?

Im using broadlink TC2 but very troublesome...thinking to switch to another brand like xiaomi aquara

Any reference to the capacitor type/value? limitation?

Mostly my broadlink all cable become live. So my light intermittent on althought switch turn off. Any suggestion brand ?

Any reference to the capacitor type/value? limitation?

I got few capacitor from RF wall switch. That's one not required  Neutral pin. I think it's for use with led bulb. Never needed for me. 1st time  I read can use capacitor to replace Neutral wire. Maybe will try with my sonoff later. Cant decided yet where to put the switch.

Regarding the capacitor, do we talking about the same thing? I read alucard89 said you can use capacitor instead of neutral wire in the switch that required both Live and neutral wire like Sonoff T1?

But the diagram is showing different thing.. I understand the diagram to allow the use of low wattage bulb. This is not the same thing, replacing neutral wire with capacitor right?

This is sonoff T1.

After reading thru the thread there seems to be no reliable RF/WiFI Wall switch.  Basically i just wanna have a switch that i can use timer and remote on/off on it . Any recommendations?

Is there like tutorial/video on how to properly connect the capacitor?

So have to open up and check? So if I find 3 wires it should have neutral correct?

So that means definitely have to ask electrician to add neutral if wanna use switch like sonoff.... damn additional costs again....

Yeah i've consider this as well, hiding this module inside the plaster ceiling.  Not sure Wifi has any problem reaching it if inside plaster ceiling. Plus if module broken, need to find a way to replace it without breaking the plaster ceiling

can explain more... don't know how to differentiate, ...

Guys, any of the power consumption monitor device that you would recommend?
Prefer socket type, like Sonoff S31, but UK plug, would like to monitor refrigerator power consumption.