Sir ApexDestroyer . . . . .
Re:
GENIE Model IS550/A
OBSERVATIONS . . .
A "Smart House" would already have this feature being inherent. Sounds / seems like to me that you are randomly / piecemeal, cobbling together an ersatz "Smart House".
Looking at the info on the Genie beam rail of this unit, it would have been of circa 1990's construction.
It is NOT having that specified ACSR3 receiver in the unit, but in 2005 an upgrade of that receiver would have been supplied, and then in ~2013, yet another upgrade was being supplied.
Your photo of the unit shown, looks akin to that latest most sophisticated unit, as well as the control electronics, and that drive motor also looks quite snazzy, to be an older '90's unit..
The control electronics has its 20 VAC power transformer mounted near it. It supplies the electronics on that board and out feeds to your receiver board with its DC supply.
Now for your query relevant to the voltage and current required for a stand alone application of the receiver board only.
BUT FIRST . . . . . is this one of YOUR units that worked and you are familiar with . . .or is it an unknown a "curb find" that has you fully fantasamizing in your head, with accomplishing dreams of sugar plums and faeries ?
If being yours, is it working ? so that you can see if the receiver is responding to the transmitter.
Otherwise you will have to utilize a sizeable complex portion of the control board to reset and sync the codes, to get the receiver and transmitter handshaking again.
SINCE this unit does use a roaming cryptologic code, with its eleventeen heptajillion combinations to assure that any Joe Blow can't also access your unit.
EVEN if he's a high tech CROOK, using a code reader, since your unit would have already stepped up to the next random code, and he read the LAST sent code, which is now being useless.
PLUS . . . you . . . would have this same problem and same possibility, if / WHEN your xmitter and receiver got out of code sync in the future.
Now see the (Start 96 font typeset) COMPLEX OBSTACLES (End 96 font type) to overcome in such an attempted utilization ?
I see by your last posted photos that you are NOT now using that STOCK photo of the most sophisticated receiver board last mentioned, but instead, the intermediate one mentioned is being shown .
Finality . . . . better to use one of the WI- Fi encrypyted RF transmitter-receiver units from China.
73's de Edd
.....a GENIE owner . . . .