does the app support more than one device? for instance if I were to have 3 devices in different locations in my home would I be able to still use the one app for all?

Hello! Yes you can run all 3 devices from different or same locations and use a single APP for any rpduct under the EasilyDo product line. 

How many feet can the night vision view?

Thank you for asking about the night vision clock camera. This spy camera has a night vision range of up to 10 feet depending on varying conditions. Thanks again!

Does it needs charging? I mean if I fit it somewhere in that case do I need to visit that place and take off the sd card for my data ? Also do I need to charge it like mobile again and again ?

Thanks of asking this question!
The air monitor spy camera can operate on battery for a limited time or you can plug it to an outlet for continous use. When you use it on battery you will have a limited battery life which will need recharging in order to resume operation. If you decide to use the included cable and power supply (its not ackward, it looks just like what the air quality monitor should have for power) you can run the hidden camera and all of its features all the time. 

To see what you have recorded, the most efficient means is to remove the memory card to view and manage the recorded files. However, if you need to see what has been recorded and you cannot physically get to the camera, you can view and download recorded files to your phone using the APP.

Let us know if you have any other questions.

does this device record audio?

Hi there! Thank you for asking.
Yes. The Spy camera air quality DVR also records voices and sound.

hi I have a big living room 5m+ do you have a model that supports night vision at that range? How is the stream viewed on cellphone? whats the mode of data transfer?

Hello, thanks for reaching out. This hidden camera will not be able to offer night vision further than 3 meters. Most hidden cameras will not have further range due to limitations. Good news! There is a work around. You can use external infrareds to offer more night time range. We carry these inconspicuous IR night vision cubes you can use in addition to any of our cameras. 

The stream is viewed on the cellphone via a free app. Keep in mind, that this camera only offer local streaming. Once you leave the home/office, etc you will loose the live view from your phone until you return. If you need anywhere streaming, consider our Wi-Fi hidden cameras with unlimited range instead.

Can you place a larger memory card?

The Air quality monitor spy camera comes with 128GB which is the maximum supported by this device.