The voltage in Kerala is almost the same as used in any other state of India. The current in Kerala is 240 Volts, alternating at 50 cycles per second. You can always buy a voltage converter if the devices you are carrying do not work on 240 Volts. One can get a voltage converter in any electrical shop in Kerala. If you can, get one from your home. Voltage and electricity of Kerala is supplied throughout the state by a government owned body.
The plugs used in Kerala are totally different from the ones used in
Western countries. The plugs used in Kerala are usually the round pin
variety instead of the flat pin type of plug that most countries in the
West use. We would suggest that you buy a combination plug adapter that
is accessible very easily in most electrical shops.