I just bought these and received them, there was no mention of the detectors requiring A/C power. Will they work just with the 9v batteries?
1477619
Hello,These smoke alarms are wireless, and do not need A/C Power. They run strictly off of the 9V battery.Thanks!www.FortressSecurityStore.com
1477620
I don't know. It would be great if they did, but the package does not include an AC cable. I put this question to Fortress but got no reply.
772546
Yes, however the detector has a preset life and will not operate after its expired. (You have to by a new one) Battery is supposed to last the 5 years ??? But you can change it out and put in a regular 9V battery.
2242961
They come off the charger at almost 4 volts, so they may trigger any over-voltage circuit. I couldnt use them for my intended purpose , but they are okay on small weaponlights, but not surefires.
1098187
No, they are not, you have to purchase nine volt batteries for them to operate.
71740
yes, mine work on a 12v system. The only thing I can't specify is whether mine is an AC or DC system.
2057769
The voltage specs mention 3.6 V. If the AA battery used has a voltage different from 1.2V, it could create such a problem. Many AA batteries give out 1.5V, which means 4.5V on a 3 pack - which is a load on the system and can perhaps fry up some circuits causing the sensor to malfunction.
2120504
Wish I could tell you. I had so much trouble with 4 of these I sent them back. One stop working all together and other 3 showed out voltage of 18v to battery and cheaper to return them than burn batteries up. Wish you luck but check output voltage before you turn your back on them.
442305
I would rather use a lithium 9v for smoke detectors. Check the manufacturers recommendations.
2163631
Check the "Good Through Date" on the package, it's within that date they should be good. I know with 1.5 V batteries (AA and AAA), if you read them with a volt meter, they don't consider them "bad " until they read below 1 volt. Apply that to the 12v battery and I would say if they were below 8 volts they would be "bad". I don't think you ever get batteries reading what they are listed as, meaning your batteries won't read 12 volts, even brand new.
720273
You would need a set that is designed for A/C current, these are made for D/C current. Or find some kind of A/C to D/C converter.
2258986
I use these with 3 volts (2 AAA batteries) and a 150 ohm resistor. To use 9 volts you need to use a ~450 ohm resistor , but, yes, they will work fine with a 9v battery.
1963184
I wouldn't use them for smoke detectors as the charge only last for a few weeks. I bought them to use in cordless microphones, and they work fine in that capacity.
1184796
Hello William, These Pet Immune Motion Sensors use a 9V battery. Thanks! www.FortressSecurityStore.com
1437892
No...this product was an EXACT duplicate of my previous detector and which did use and does use a 9V battery.
2275067
Generally speaking they should so long as you regulate voltage appropriately since they are just sensors. Nothing special about them so should be ok I'd think.
926590
You can, but I not sure why. These are hardwired detectors designed to sound an alarm tone on all compatible detectors on that circuit. Seems you might be as well off with a battery operated detector.
1055347
If you hook them up correctly they work fine with power locks. I had no issues when I installed mine