Inner lid can, but there's one more part inside ventilation hole. It can be removed but more hassle to remove.  Let me try to find a video of it.

The ventilation hole must be detached and clean to squeky clean, if no insect will go in there (especially roaches). Even if the ventilation hole is clean but if you have not used it for a few days, better to clean it again before using.

Since my mother in law complaining about her rice cooker having tiny roaches in the ventilation hole, I had switched to cooking using stainless steel pot over stove. She had changed to using the old-fashioned type.

its the fastest rice cooker i can find in the market

We've used it but not 5m but 2m. Generally as long as the load doesn't exceed 13Ax230V, it should be ok.

That means she's boiling or steaming rice over the stove?

My MIL now changed to use traditional rice cooker. Something like this:

Me? I use Zebra stainless steel pot, to cook rice. Not steaming, just put the rice+water directly over fire. Close the lid when the water almost dried up and wait for the crackling sound to turn the stove off.

Panasonic model has scalloped wall pattern which helps speeds up bubbling effect with boiling water this improving cooking time. This is something adopted from large industrial boilers know how perhaps. Tefal is crafted similarly but perhaps Panasonic improved this.

Toshiba model around for a few years. Try online. It has a stainless steel core which lends to heat storage thus shorterning cooking time and longer keep warm time. This is proven technology as employed in multi ply metal cookware that has aluminium and stainless steel cores. Electrical consumption could be lower with this kind of pot.

Finally i bought the Panasonic SR-ZG105 model instead, after knowing 1L is more than enough for my family size.
So far everything is good, except when choosing the brown rice, it requires 2 hours to cook   
At the end, i just use normal white rice mode to cook the brown rice, the taste got not much different also

Finally i bought the Panasonic SR-ZG105 model instead, after knowing 1L is more than enough for my family size.
So far everything is good, except when choosing the brown rice, it requires 2 hours to cook   
At the end, i just use normal white rice mode to cook the brown rice, the taste got not much different also

why not go for noxxa pressure cooker ? is multifunction, my mom always use this cook rice

How do you cook rice in the Noxxa? we use it to cook curry. Got it FOC, but wouldn't be paying the price Amway is asking for it though

Am looking for a small rice cooker around 1L, able to cook/steam vegetables (i.e. broccoli, carrot, potato, corn etc), instant noodles, porridge/congee. Even better if able to cook simple soup.

Besides those expensive ones with many recipe buttons, I wonder will other types of rice cooker with much simpler look able to do the job? I'm considering Elba ERC-E1031WH, but its description mentions only cook rice and keep warm.
http://www.elba.com.my/product/erc-e1031wh/

Thanks for advice

Most basic rice cooker can do that.

So... basically any types of rice cooker will do, right? I was worrying that could there be any type that is strictly for cooking rice, or will spoilt otherwise

Similar to any cooking pot, do not cook till is burnt.