Does this work off AC connection?
471124
Yes. I only use it that way; I've never bothered to put batteries in it, as the sound is so good, we use it in the living room.
1645217
Don't know why it wouldn't. If ext HD has option for AC power, it certainly will. Well worth a try.
144976
Not exactly. It will work only on 120V ac outlet. Optionally if you have an inverter which converts dc voltage to ac voltage that will do the trick.
1910010
No. You have to buy AC adapter separately. I concur with the others who have answered this.
798284
Yes, it does require AC power. It comes with a power adapter to plug into the wall. Very simple unit and does exactly what it sets out to do. I recommend.
1092105
No, you have to connect it to your battery or a/c. You can use the 12 volts that runs the system.
860429
No. It operates off the 110V AC house wiring like any other conventional light switch or dimmer.
380252
Yes. There is a small adaptor that plugs into an AC outlet, and a wire from there plugs into the unit. There is no on-off switch. The unit turns on when plugged in, and turns off when unplugged.
1386852
Yes it does, runs on ac or batteries. Cord un-plugs from radio, but does not have room to store it.
1524941
No, it has a 110V three prong connection on the back that would plug into a typical 110V AC outlet.
642641
I am on 110. I would assume no as the connection on the unit is designed for 110
1655143
Only if it is using a AC to DC inverter. This unit switches on an off AC current
1720149
It does, yes. According to Synology, AC Input Power Voltage is rated at 100V to 240V AC at 50/60 HZ, Single Phase.
1618421
No - I think you're just looking at the a/c adapter. It has a battery but it charges off of a plug (shown in photo).
1427560
I don't think so. The units I bought only has wires to AC. No other wires or terminals were on the unit.
1801439
No sorry it works on ac unless your looking at the trucker version which use 12 volt. Either way this the greatest invention since popcorn and do a great job of heating under a person rather the being heated from the top like electric blanket do. I strongly recommend!!
961448
No. It's powered by a small AC to DC adaptor. You do need to factor that into the installation.