Want to install electronic lock with keypad access system

Buying Advice Home Tech & Appliances Buying Help
1

Hi, i am planning to install an electronic lock with access system (key input) on my main door (iron gate).

I have come across the following components available via Amazon.

  1. CP Plus Electronic Door Lock, INR 1,345
    URL: Amazon.in
  2. Generic IP68 100% Waterproof Password Keypad RFID Card Reader Door Access Control, INR 3,300
    URL: https://goo.gl/GYpuZZ
  3. SECUREYE STANDALONE ACCESS CONTROL BY KEYPAD OR RFID, INR 1,950
    URL: Goo.gl is sunsetting

Also, i learned there would be need of power supply.

But, there is no much documentation available. I am unable to figure out how both of them(electronic lock and keypad access system) would be connected and what sort of power supply i should look for.

Also, if anybody has used above products, please share your experience regarding their durability.