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  • 15/01/2022

    These alarms are a God sent for every rc enthusiast, they weight almost nothing, so they won't add to your model. Very loud beep can be heard from a very long distance, excellent for rc planes and helicopters, I also use them to keep an eye on stored batteries as it tells you the voltage on each cell. Excellent product from Banggood as always, very fast delivery, very cheap and excellent product. Thank you Banggood for another excellent purchase.

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  • 28/01/2022

    Good quality product. I recommend to purchase.

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  • 05/12/2021

    Simple and efficient fully recommended

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  • 18/07/2021

    received quickly thanks banggood, great for controlling the battery level and setting a lipo alarm . Simple but effective

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  • 05/04/2022

    ... Everything was fine, as described...

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  • 10/03/2022


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  • 03/03/2018

    These small devices come in quite handy in order to check your 1S-8S batteries. They show the voltage of the overall battery, as well as the voltage of the single cells. Additionally the device also allows to set a quite loud low voltage alarm. Please see my 2nd attached picture for more details and a compact description about what the device offers.

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  • 29/09/2017

    If you are in a hobby that has anything to do with lipo's this is a must have, this has saved my quad on countless occasions, but the ones I ordered this time one was missing the button on the top so of course i can't set the alarm so I have to contact banggood about it , but other then that there great and pretty durable definitely worth the couple dollars

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  • 14/09/2017

    Here we have the must need for every fly guy and gal when it comes to DIY.. If your Quad has no feedback for your battery voltage then you should just take that $30 pack and throw it into a recycling bin right now. The key here is to save your investments. This lil guy will help do it. No worry's if you plug it in backwards its not going to fry if you catch it. The unit will beep on startup and display in less than 1 second and cycle trough each cell then read All the cells for the final voltage. So you can see if a cell is bad or under voltage etc. On the back its clearly described on each pole and your + and - alignment. It is best to add one to each battery permanently or on your quad with an extended wire if needed to plug it in. These work well on the fly and do not need to be integrated. ITS LOUD..

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  • 02/12/2016

    tardas en darte cuenta que tener un comprobador de baterías es imprescindible si quieres que tus bateriás lipos duren un mínimo tiempo. este modelo además lo puedes programar para que te avise en pleno vuelo del estado de la batería. el único pero es que aguanta muy mal los golpes y que podría ser más pequeño, menos aparatoso.

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