Needed a reliable remote for my bed-ridden wife in a nursing home.  She can only move one arm and that hand with difficulty.  IPAD + dijit + Beacon was the solution that I chose. Unfortunately, this thing eats batteries in weeks not months.

No AC Adaptor for the Beacon?   Made my own. (Warning: Don't try this if you are faint of heart or can't afford a new Beacon.)

Looked around the house and found two "left-over" AC Adaptors: one 6 volt 150 ma and the other 6 volt 200 ma.  Didn't want to cut off the plug till sure they worked, so I bought a "DC Power Pigtal Female adaptor from my local electronic hobby shop for $1.25. (But you could cut off the plug if you can find the adaptor.)

Cut two 1/2" wood dowels to 1 7/8" long.  Striped the wire on the Female Adaptor back about 1/2" and wrapped it around a small sheet metal screw (rounded top, phillips head) and screwed them into the wood dowel (making them 1/2" x 2" overall).

Cut a small notch 3/8"in the bottom of the Beacon Battery Cover, so the pigtail could come out.

Inserted the battery replacements dowels and wires into the case. Note, the batteries are connected in series. So look for the + and - terminal with just a single contact (vice the bar that connects to the adjacent battery slot). Both of my AC adaptors had the outside barrel as + terminal and the inside as - terminal. Might want to check yours with a volt ohm meter.

Viola - an A/C adaptor for $1.25 (plus Spare Parts.) Either A/C adaptor works great with a 100% indication on Battery State of Charge. As soon as I plugged it in, the blue light flashed a few times and responded to dijit commands. Now I don't have to worry about batteries.  But if needed to can always go back to batteries.