Do you need to put batteries in the wireless switch?
860428
No, these are in-wall switches that need to be hard-wired to your electrical circuit and are powered by 120V mains.
860429
No. It operates off the 110V AC house wiring like any other conventional light switch or dimmer.
860430
Not require any battery, because the SW take the his power supply from 120 volts AC
860431
No, Plus, there is no place for a battery backup in this switch. If you lose power, it is out just like a conventional light switch. When the power comes back on, the switch should reconnect to the wifi.
497727
No, you plug it into a power outlet to get it charged. No batteries needed.
1490204
Yes, providing you wire it up right, I added a secondary switch making it impossible of draining the battery just in case, Happy Trailing.
1587642
Correct! No batteries are needed they plug right into your music device... If you don't like cords you may want to try the Beats that are wireless
982781
Sorry for the late reply, but yes. There are two designs. The wireless one and the wired one. Both are great. Bluetooth does need batteries. Wire is at least 2 feet. Mine was about 4.5 feet. Sometimes the cord is too long, but it can be managed by tying it for the extra. Great products though! Still running well after almost 6 months.
786934
yes, but make you use the switch and set it to the corectvtype of battery your using or you'll screwcup the radio permanantly.
1832901
No. Neither have wireless function, unless you mean "does it have to be plugged into the wall". The alarm box runs on battery power. The pad has a wire that plugs into the alarm box.
1269936
Dan, this gadget is wireless and you don't have to worry about wires. You install it and it starts to ding dong. If recall, you will need a battery. Just make sure about that before you finish up. Peter
1827415
Yes, It has a "wired" remote switch and battery gauge. I was a little disappointed at first that it wasn't wireless, but I have never misplaced this one. Also, as Brian said, I found that the VDC reading is a couple tenths low. Not really a problem, It has probably increased my battery life, since I don't like to drain the batteries to low, and I will charge the batteries when the gauge shows about 12.2 VDC Better it to show a little low, rather than high, to keep from running out of "juice"
867757
To add to what the other commenters have said here, the wireless module plugs into a wall outlet, but it can be pretty well hidden. You won't need to interact with it, as the main unit will activate the wireless module when it is turned on. If you're paranoid about parasitic energy consumption, you may not like that, but if it's well designed then both the wireless module and the main unit go into a low energy-consumption mode when not being used.
2062955
I have not needed batteries but power the WH FM Transmitter 3.0 off a USB port (adapter came with the transmitter) on my Imac. Succinctly put, you do not need batteries if you use an alternative power supply.
824242
I have had two of these units for 5 or more years and neither has required a battery change. The battery is in the switch only, not the part that plugs into the electric. I use one of them (the one in the pantry) several times a day so they must not use much power. The battery is only used for an instant when you switch it so should last for a very long time.
1951124
No, you will need an external switch to do that. Also you need to make sure it bypasses your charging system, so that you are not trying to charge your batteries from the inverter.
842774
Sorry, my mouse is not wireless so I can't answer that. I don't like to click and have nothing happen or have the battery die at inopportune times.
695483
It can be depending on how you use it. Personally, when I'm done using it I remove the batteries and put the device and the batteries in a little sack. But if you tend to use a setting where you want to keep the values you set, then you'll want to keep the batteries in and make sure you have extra batteries with you in case they die (each time you replace the batteries, you'll have to reset the values).
882905
No. You plug it in. It's pretty powerful, so batteries would run out too quickly. Also make sure you wear the goggles!:)
1171374
Sure, but be for warned my switch comes on by itself which means the batteries are always dead.