The item description lists that it requires a 1x 12V battery. Does it mean it NEEDS a battery? Or the highest input is 12V?
1454901
Does not need a battery. I have mine installed in a gun safe with a 12v transformer powering LED lights. Just uses the magnet to close (or open, depending on how it's wired) the contacts. I was not able to get close enough to the magnet in my setup so I used a stronger magnet. Switch works just fine.
1454902
It needs power, but can only handle up to 500mA. So you can easily use two resistors and a MOSFET to power the LED strip (or whatever 12v load) and power the reed switch at the same time. Go to redmountainmakers (dot) org and scroll down the home page - it has a pic of how to wire it.
1454903
Yes and no. You can run it with a battery, but it can't be more than 500ma of current or else it doesn't work right. You can also bleed off your main power source, if you step down the current to under 500ma using some resistors and a MOSFET.
1454904
It is a reed switch.... meaning it needs a magnetic field to change state. Power goes thru its contacts
1454905
It certainly does not require addition power source for the switch mechanism to function but the light or other device you attach to it will, of course. I assume they limit the voltage to 12 volts. I used mine to activate LED lights upon opening a lid. I actually only used a 9 volt battery, which powered the lights just fine.
1454906
I assume thatis a typo. There is no battery required as this is a passive device. I am using it on 24 volt system.
1454907
Does not require batteries. I used it in a low voltage application to turn on/off LED light strip. My power source was a 100-240V AC input to 12V DC output power adapter.
685903
This requires an external 12v power supply which isn't included. A decent supply can be found on Amazon by searching for B007TGO3HO. It's about $7.79 and should have plenty of capacity for your project. Happy automating :-)
1310345
12v battery that is needed is used to power your head unit. You head unit amplifies the power to each individual speaker output (usually 50w x 4). These speakers will not work without at least a 12v power source.
1668735
12 volt power is only needed for illumination. It will still read temperature without a power supply.
1330802
What a nice girlfriend! Yes, this will need to be hooked up to a 12 volt battery. I am assuming he has a boat to put it in. If that boat has electric start or an electric trolling motor it can be hooked up to either one of the batteries used to start the motor or power the trolling motor.
2047541
The product description includes these words: SpecificationsOutput Voltage: 3.6V Input Voltage: 120VAC | . I think the "dual" means two batteries at a time.
1979584
If you plug it serial u need 48V and if you plug it parallel u need 12V, a car or motorcycle battery.
320822
A 9v battery was included with mine, although a cheap chinese brand. But it has worked well so far, about 1hr plus of occasional usage and a complete check of a 3500 sq/ft business.
1528340
No, it needs a 12 volt source. I actually bought one of those jump start boxes, and just recharge it when I was done pumping. That way I have an emergency jump start source as well. Hope this help.
2103302
needs a 12v power source via vehicle battery or get a 12v adapter for the 12v source in you console to plug into.
1674788
Neither battery or 120v, mine is hooked into the either 12v dc or 24 AC on my alarm panel not sure which one, buts its certainly a low voltage line...dont know if 120v would be too much...but would expect the specific unit's capabilities are in the data shert on GE's website
697308
As others have said, it requires 12v DC. You'll need a power supply for operating it from household power.
1371158
Requires 3x 1.5V button-cell batteries but it does come with batteries so you won't need them right away.
495648
The one that I bought does both 6V and 12V batteries. I thought that I bought the 1500A. Wish that I could be of more assistance.
189291
It comes with a 12V adaptor that plugs into a 120V standard plug. It isn't a bus powered device.
1421081
The unit works only via a DC input - no normal facility for a battery. But if a battery is essential, a technician could certainly adapt a heavy duty battery and attach a chord which would power the unit. The unit is first rate, incidentally, and performs just as advertised.
947665
gave unit as a gift to friend/ but I would say yes, they just call for 1 1/2 volt battery