How do I get the revision version in RouterBoard?

RouterOS General
1

I want to receive power readings over SNMP
Found OID .1.3.6.1.4.1.14988.1.1.3.12.0

However, this does not work on mikrotik with revision 2 or 3 on any OS version.

system routerboard print 
       routerboard: yes
             model: CCR1036-8G-2S+
          revision: r2
     serial-number: 968E0A2ACFA1
     firmware-type: tilegx
  factory-firmware: 6.43.5
  current-firmware: 6.47.10
  upgrade-firmware: 6.47.10


system routerboard print 
       routerboard: yes
             model: CCR1036-8G-2S+
          revision: r3
     serial-number: D83A0D7FA85A
     firmware-type: tilegx
  factory-firmware: 6.45.9
  current-firmware: 6.47.10
  upgrade-firmware: 6.47.10
  1. How to get the revision version in System/RouterBoard via SNMP? What is this OID?
  2. What is the OID for “Power” in revisions 2 or 3?