It takes DC 12v and there is even an optional battery pack.
I see the optional battery pack but I also note that in the spec sheet it states
Power Requirement
AC100V-240V, 50/60 Hz
Power Consumption (maximum)
14V, 1.4A
I don't see 12V DC anywhere yet.. where did you see this at?
edit to add from thier FAQ's
Can the CDR420 be battery operated?
Yes. An optional lead acid battery (RPS420) allows the CDR420 to be used when AC power is not available, or as battery power back-up.
Yes I see the picture too, but you expect at least I do, to see them state DC power in their spec sheet