How long does the battery last in the sensors?
222082
Smartthings says 6 months to a year. I have only had mine a little over a month. One of the first sensors I got was defective, in that it burned through the batteries in a couple of days. They replaced the sensor and this one I have no problems with. I have this sensor on a door that is opened and closed quite a few times a day. Also the motion sensor is in a room with quite a bit of activity. The battery levels shown have decreased at a very slight proportion so far. If the battery levels continue at the same rate I predict that the batteries should last, at the very least, 6 to 8 months I am betting. You can monitor the battery level percentage on the app. As it gets low it starts sending you notifications. So even when the defective sensor was burning through the batteries...at least I knew it was about to die and it sent me consistent notifications that it was on it's way out.
615763
All the sensors have batteries included, they are lithium I think (cant remember) and are odd size ( much shorter than an aaa). My parents system is still going after several years so they are good ones!
948334
I don't have an exact answer about battery life. But my sort of reliable memory is, 6 or 9 months. The batteries seem to last longer in the Honeywell. When the low-indicator symbol appears it gives you a week or two to replace the batteries. But the problem is I sometimes failed to notice the symbol. It doesn't matter in one way--when you replace the batteries you have to completely reprogram your 7 days :(.
776101
it will record 2 hours after the motion sensor is activated, however - though the battery life would seem to be longer - you cannot get it to do anything beyond the two hours without reactivating it; I do not recommend it for the motion sense function, but otherwise it is good.
1874882
The lithium battery supplied is designed to last the life of the detector. At that point, in my opinion, its probably best to go out and buy a new detector.
1169439
I don't really know. I bought an adapter that was suppose to be compatible with the sensor but I could not get the thing to work with it. I just bought some batteries that are for high usage and they have been in the units for months now with no problems.
264787
In this sensor's normal operation, it stays triggered to ON for four minutes before resetting to OFF. If motion is repeatedly detected within 4 minutes, it stays ON. There are three sensitivity settings, at the most sensitive, it will pick up some rather slight movements. If you can set your program to monitor the status of the sensor to turn the light off after the sensor returns to off, that should work. If 4 minutes isn't enough delay, there is also a "Test" mode in this sensor that eliminates the 4 minute reset time and it will continue sending out ON signals every time motion is sensed. You could program in your own time delay in this mode. No clue on how it would affect the battery life. In this sensor's normal operation, it stays triggered to ON for four minutes before resetting to OFF. If motion is repeatedly detected within 4 minutes, it stays ON. There are three sensitivity settings, at the most sensitive, it will pick up some rather slight movements. If you can set your program to monitor the status of the sensor to turn the light off after the sensor returns to off, that should work. If 4 minutes isn't enough delay, there is also a "Test" mode in this sensor that eliminates the 4 minute reset time and it will continue sending out ON signals every time motion... » Read More In this sensor's normal operation, it stays triggered to ON for four minutes before resetting to OFF. If motion is repeatedly detected within 4 minutes, it stays ON. There are three sensitivity settings, at the most sensitive, it will pick up some rather slight movements. If you can set your program to monitor the status of the sensor to turn the light off after the sensor returns to off, that should work. If 4 minutes isn't enough delay, there is also a "Test" mode in this sensor that eliminates the 4 minute reset time and it will continue sending out ON signals every time motion is sensed. You could program in your own time delay in this mode. No clue on how it would affect the battery life. « Show Less
456550
I have four of these, all installed since 9/2013. One of the batteries died after about 6 months, which kinda worried me, but the other three are still on the original batteries and still sound loudly when tested. So, 6 months to at least 17 months. These are nice little units, worth a few extra bucks for the small form factor.
632485
It depends on whether the wind is blowing and what the motion sensor detects. I would say about 16 days or more if the wind isn't blowing things around. :)
773487
It just depends on where the sensor is located. Higher traffic areas will wear the battery down quicker. I will say this...the batteries that came with it lasted no time at all.
65981
Sorry I have no idea since the last sensor I had never wore out. Anyways I think this product is a waste of money now given apps like RunKeeper.
661473
I use my sensor pump all the time, many times a day. The batteries seem to last pretty long. I also have mine set on the lowest setting. In the beginning the light is green and the as the batteries get weaker it turns red. Don't replace the batteries until it stops working. Always keep an extra set on hand.
741170
I think 3 months is reasonable. Maybe 4 - 5 months. It really all depends on how often the sensor is triggered by something detected. Every time something is detected, it triggers a "send" signal, and this uses a tiny bit of battery power. In my case, I have replaced all the 9V batteries with the long lasting 9V Lithium batteries. These should allow me to go 6 - 9 months instead of the approx. 3 months. 12 months may actually be the norm. I will soon find out. ( I don't remember anything about a zero delay. I have the set to what ever was the default setting (except no visible red LED settings). I think 3 months is reasonable. Maybe 4 - 5 months. It really all depends on how often the sensor is triggered by something detected. Every time something is detected, it triggers a "send" signal, and this uses a tiny bit of battery power. In my case, I have replaced all the 9V batteries with the long lasting 9V Lithium batteries. These should allow me to go 6 - 9 months instead of the approx. 3 months. 12 months may actually be the norm. I will soon find out. ( I don't remember anything about a zero delay. I have the set to what ever was the default setting (except no visible red... » Read More I think 3 months is reasonable. Maybe 4 - 5 months. It really all depends on how often the sensor is triggered by something detected. Every time something is detected, it triggers a "send" signal, and this uses a tiny bit of battery power. In my case, I have replaced all the 9V batteries with the long lasting 9V Lithium batteries. These should allow me to go 6 - 9 months instead of the approx. 3 months. 12 months may actually be the norm. I will soon find out. ( I don't remember anything about a zero delay. I have the set to what ever was the default setting (except no visible red LED settings). « Show Less
544
When you first turn them on they come on and stay on for a few minutes. You can set how long you what them to stay on for up to about 15 minutes. If you know wiring you could by pass the sensor so they would stay one as long as you wanted them too with a switch.
1260994
I had read somewhere online that people had the batteries last 30days. I found that after 48hrs the motion detection started to be significantly less sensitive until I put fresh ones in again.
1946698
The battery seems to last a long time. I would say over a year. The batteries are easy to replace too...my favorite pedometer!
1878767
Not long. about 15 mins. of run time. I bought a second battery so i could easily swap them out and keep going.