CAMWAY 5 STKS 2in1 1-8s Lipo Batterij Spanning Tester,RC Lage Voltage Buzzer Alarm, Batterij Monitor Checker Tester voor 1-8s Lipo/Li-ion/LiMn/Li-Fe

This type of device is very useful to track battery voltage precisely. It provides a clear, audible alarm when battery voltage drops to your preset value. I can personally vouch that you can hear it in a model that is at 200 feet or more away (up or downgrade). It provides me the security I want to be able to keep on flying when I would normally land “just in case”. I know that when the battery is low I’ll hear it and have enough reserve to land safely. Not just for aircraft though, I use them in my surface vehicles as well. I understand secondhand That they are useful in boats. I drive rock crawlers, And the runtime is long enough that it’s easy to forget to check voltage and damage of battery.A lot of people sell these devices. I’ve bought from several different vendors and never noticed a difference in quality, or even an appearance. These are certainly as good as any I’ve tried. I recommend them for any of the above uses, or similar.

Good little product at a great price. Works perfectly in my rc planes.

This voltage meter gives precise measurements of lithium polymer battery cell voltage.The adjustable alarm is very useful especially on RC helicopters.It keeps you from having to guess how much voltage is left and prevents crashes from over estimating the amount of energy remaining in the battery.Great product.

Funziona bene.

Es genial