Hi, i am newbie in this smart home system.. I have done some readings about it and i am leaning towards Zigbee protocol where Sonoff brand would be my choice. My house does not come with neutral wire at the switches and all the switches are good quality and quite expansive mechanical switches which I changed just last year - MK Honeywell. So I don't intend to change the switches as the price of smart switches is still on the high side.
Based on my readings, I can still use the mechanical switches with smart relays (neutral wires - ZBMINIR2) at the lighting wiring and not at the back of the switches, together with a proper Zigbee Bridge:
Would like to seek help on the following questions:
1. Would like to seek your advise on this setup.
2. If no 1.  is doable, any Contractor/ Consultant in KL that can help to install this setup for the whole house?

i believe the no neutral no capacitor working concepts, it still use capacitor internally as mini battery.

also in one of the moes switch, it listed this switch cannot be use on DC fans and no one comment on light flicker issue yet

Because I can always remote access to my house to control when I am not at home

It is not troublesome, if you feel troublesome, your setup is totally wrong

I’d like to share a remediation method that has consistently helped me fix Wi-Fi–operated IoT devices showing the following symptoms:

Symptoms:
1. You cannot control the device from the smart app, even after rebooting, resetting, or replacing the battery.
2. The smart app can discover the device within range, but it refuses to pair with your account.

Fix / Remediation Steps:
1. Set up a simple temporary Wi-Fi access point with a basic SSID and password (for example, SSID: “1”, password: “11111111”).
2. Try pairing the problematic IoT device with your smart app account via this temporary Wi-Fi network. Usually, it connects within one or two attempts.
3. Once paired, reset the device again and attempt to pair it back to your main Wi-Fi network. It should now connect within one or two tries.
4. After everything works, remove the temporary Wi-Fi access point.

Although the exact cause is unclear, router logs indicate the device is refusing the handshake with the main Wi-Fi router.

These steps have successfully revived four of my own “faulty” IoT devices over the last two years (three battery-operated and one AC-powered).

Thanks for the reply. I am only planning to get some simple zigbee smart switch which i can use to  control some light switch and put timer.

Aqara seems very premium and higher priced which only works with aqara hub.

I am looking at some others those no neutral & no capacitor switches. there are alot brand in Shopee.

Smartrul and Mogi,  I assume are these cheaper "lower" quality ones?

how about brand like eva, eardatek or moes?

I have this lights powered by USB 5V... is there something like a smart USB switch? WHere I can on and off remotely?

I mean I could use a smart switch then put a adaptor and then cable... but thinking if there's already one in the market?

What kinda lights are those and where is it located? Maybe some pictures would help visualize?

I have couple of USB connections such as cooling fan, etc and I used tuya smart adapter at the power point to control and I do have one power level setting to auto switch ON

It is power source for my prayer altar... the lighting using USB 5V interface haiya.

So was thinking how to kinda on and off it remotely.