How long do the sensor batteries last, especially on the zero delay mode
741169
Not sure exactly, but I rarely replace them, I would say over six months at the very least
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
741171
I don't understand what "zero delay" referrs to. I have 6 outside sensors set for one warning before reset. All six have performed now for 2 or 3 years (+). The outside sensors' 9V batteries last 2 or 3 or months or more which amazes me. As soon as I get "low battery" alert on one, I replace all batteries. The sensors will actually operate even with the batteries down to 7.5 V or so.The 9V batteries may be purchased on E Bay (fresh alkialine) for around $.50 each +/-. My only 'con' is the difficulty with which the covers must be removed to replace the 9V batteries. This is probably the longest lasting Chinese electronic of it's type I've ever owned. No sensor failures at all. . UPDATE 9-20-14:I bought a complete set 3 1/2 years ago. They have operated flawlessly. The batteriies last about 10 months. I was wrong on my first battery life estimate. Just last night (9-19-14) I again replaced all the 9V batteries, after getting a "low battery warning". I then, this morning, checked all the sensors by means of two cell phones, one at the alarm console, the other on 'speaker phone' as I made the rounds of all areas. I am absolutely astounded that this CHINESE device CONTINUE to work perfectly nearing four years. This is a record for any Chinese electronic device I've ever purchased.
741172
The batteries that came with the sensor about 2 months. A good alkaline battery maybe 4-6 months depending on the activity it gets. Ex. I put my backyard sensor up in January and haven't changed it. But my driveway sensor from January I changed in May and I bet it'll be due soon. I'm not sure what "zero delay" is, but mine sounds immediately upon motion and if motion is consistant it repeats with about a 2 second delay.
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.
466257
I use these batteries in some burglar alarm sensors, and mark the date of installation. Most of the time (in at least half a dozen instances), I will get between 2 - 3.5 years of service on the Ultralife batteries. It's not 10 years, but it is far more than I would get from a standard alkaline.
1519582
The sensor light does not stay on after movement or motion stops. I never timed it, but it goes off after a couple of seconds. Your batteries will last. I haven't replaced mine yet and i still give it 5 stars.
1695790
Hi. Unfortunately they cannot be programmed I have one in my backyard for my dog. It will usually stay on for 30-35 seconds. The sensor is pretty good with movement I also like the brightness of it Takes 4 D batteries. Durcells work well
1107786
They have a long life. I have this thermometer for about a year and I still have the original batteries.
46013
I've had it for a while (probably a year at least) and haven't had to replace the batteries yet. I use it about 5x a week to measure rice, so it's not just sitting on the shelf
1036633
when battery is fully charged i get four to five hours of continuous use -------- going to try a stronger battery this winter. zeroman GREAT PRODUCT!!!!!!!!
1330432
Their literature says that the batteries and the sensor should be changed once per year. I have owned these instruments about 25 years and have found that every 2 years is just about right. I google, ( and now Amazon ) look at price and then buy
472649
Not sure how long the battery lasts. I've had my Mini Hygrometer since last winter 2012. It still works just fine. It's perfect for fitting in small places. I keep it in my guitar case in the dry winter months to keep check on humidity. In humid summer months I keep it on night stand where it doesn't take up much space. I don't expect this digital unit being a small size will go through batteries very fast. Battery could last a year or two. Most important, this unit is very well made. Hope this helps, Stan
1506370
The available settings for the motion sensor are: 5 minutes, 10 minutes, 30 minutes, 60 minutes or Off.
808996
When the tracking feature is enabled (the button is pushed) it will automatically send out a signal every 10 minutes for 24 hours. Then it will stop. You will need to reactivate the track button every 24 hours. Apparently, the batteries will allow you to send out position location for at least four, or more days, depending on temperature.
884973
I am not sure how long the batteries last; however, I disconnected the light for two reasons, 1) the light is brighter than real cameras and 2) mounting and replacing the batteries would be a hassle on trying not to break the wires. Now with that said, after you install the dummy camera you can not tell if it is real or not!
1074190
The sensor is battery operated, however the battery and all of the electronics are encapsulated and as such not serviceable nor replaceable. The battery does however last several years under normal conditions.
1091028
You can set it for how many hours you want it on, but will still go on and off with the sensor. Great little timer.
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.
1313534
I don't believe there is a way to tell until the transmitter and/or receivers stop working. The batteries should last a long time though. We have devices that use the same battery and they lasted at least two years, in most cases more than that long. Hope this helps.