In case this is needed:
MX version:
root> show version
Model: mx104
Junos: 13.3R1.8
JUNOS Base OS boot [13.3R1.8]
JUNOS Base OS Software Suite [13.3R1.8]
JUNOS Kernel Software Suite [13.3R1.8]
JUNOS Packet Forwarding Engine Support (MX104) [13.3R1.8]
JUNOS Online Documentation [13.3R1.8]
JUNOS Services Application Level Gateways [13.3R1.8]
JUNOS Services Jflow Container package [13.3R1.8]
JUNOS Services Stateful Firewall [13.3R1.8]
JUNOS Services NAT [13.3R1.8]
JUNOS Services RPM [13.3R1.8]
JUNOS Routing Software Suite [13.3R1.8]
SRX version:
root@lab-srx-01-a> show version
node0:
--------------------------------------------------------------------------
Model: srx240h
JUNOS Software Release [12.1X46-D67]
node1:
--------------------------------------------------------------------------
Model: srx240h
JUNOS Software Release [12.1X46-D67]