How can the power be calculated for the SMART control system

[engmohades]

How can the power be calculated for the SMART control system, considering the use of a 12 volt DC source for the following components, all of which operate on 12 volts DC and 
HOW calculat the total current ?

number  4  of KC868-E16V2            ( total 64relay )
number  2  ofof H32B PRO              ( total 64relay )
number  2 switch module boards      ( total 64 switch ) 
number  3 contactor 45A 12v dc )

[admin]

KC868-E16v2 use Omron high quality relay, every relay coin work current about 50mA. so if you have 64 relay, will 64*50mA. Of course, it is necessary to increase the margin, because the peak current will be higher when the relay is opened

KC868-H32B Pro when all 32 relay are ON, current about 800mA

“switch module boards ” i don't know which board you will use, but for these INPUT type of board, current all are very low, will <500mA

contactor use you use 45A 220A, contact need work with 24V dc coin, not use for 12v dc. current about 80mA when turn ON. but peak current will be 1A

[engmohades]

attach pic of  switch module boards and switch
and I use 29 on/off switches and 6 pir sensor  and it needs a 12 volt source as well

for number  4  of KC868-E16V2  ( total 64relay )

64 relay omron = 64*50mA = 3200/1000 = 3.2A
...............

number  2  of H32B PRO  ( total 64relay )

when all 32 relay are ON, current about 800mA

= 800*2/1000 = 1.6A
.....................

number  2  of switch module boards

= 2*500/1000 = 1A

total amper = 3.2+1.6+1 = 5.8A

chose power supply above 5.8A

IS the calculation right ?

can send me link of power supply above 5.8A from kincony ? all part i used from kincony

[admin]

suggest chose DC12v 7.5A power supply.

here is link: https://www.aliexpress.us/item/225580087..._shipto=US