My sensor batteries are fast empty(2 day). So I use wire. -Two wire using (- black, +red) Adapter 5v, 1A [image] Cut [image]

Hmmm. That could work beautifully in places where there is AC power nearby and the sensor does not move… such as the multisensor that tells me whether the dryer is finished. A USB charging adapter should be able to do exactly the same thing as that arrangement. Before I try that, can anyone tell me…

I’m definitely no engineer, but since the original battery was 3v, and the adapter is 5v, wouldn’t that be dangerous?

[image] Coolsaber57: I’m definitely no engineer, but since the original battery was 3v, and the adapter is 5v, wouldn’t that be dangerous? Could be, but voltage ratings usually are not super-precise. In any event I thought about it too, and there are 3v adapters out there for 6 bucks. If I d…

[image] Coolsaber57: I’m definitely no engineer, but since the original battery was 3v, and the adapter is 5v, wouldn’t that be dangerous? It has worked well for over a month now. At first I also thought it was impossible But it worked very well.

[image] Glen_King: Could be, but voltage ratings usually are not super-precise. In any event I thought about it too, and there are 3v adapters out there for 6 bucks. If I do this, that will be how I roll. There are 2 things to watch out. The 5V works for this sensor but won’t work with Iri…

I use this combo as the power adapter is only 3v. I run the small wire through the wall, ceiling or floor and connect multiple sensors to one adapter close to a power source. I have 3 of these which can handle up to 1A. [image] Amazon.com: ZJchao 3V 1A AC Adapter to DC Power Adapter 5.5/2.…

My four Aeon Labs MultiSensors are running with the supplied USB cable from the little iPhone chargers. It’s been very reliable for two-ish years, although running the device from external power means temperature calibration is needed. (USB power makes it a ZWave repeater & allows more frequent repo…

I also think 3v is better for the sensor. :sunglasses:

Do not worry. Battery CR2450 is empty

Devices & Integrations

michaelahess (Michael Hess) June 29, 2017, 5:22am 12

Long runs off 5v will drop the voltage at the sensor below 3v if you aren’t careful. Using 12v and DC to DC converter would be a better option.

Topic		Replies	Views
3v Step Down Converters for Sensors Devices & Integrations project_power	12	5230	July 1, 2018
Replace a sensor battery with a wired power source Devices & Integrations battery , sensor , power	5	4343	March 4, 2017
Make a battery powered sensor run on USB Projects & Stories project_power	1	7247	February 1, 2019
Iris Motion or other high drain 3v battery AC/DC replacement Devices & Integrations	0	225	February 22, 2021
Question for you Electrical Engeeners Device Ideas	17	2195	March 2, 2016

Do not worry. Battery CR2450 is empty

Related topics