It is a 3in1 gadget with LiPo Battery monitor, Discovery buzzer & Signal loss alarm functions.
Compared to normal Battery Monitor, it's much more compact and lighter yet more powerful, it can be placed inside the frame thus well-protected , no need to look for your buzzer everywhere when your mini quad crash. Package includes 2pcs
Twin loud buzzers, 85db each make you easily find your lost model
Automatically alarms if loss signal for 1 minute, work with a CPPM signal
Working voltage: 5.2~26V DC, suit for 2~6s lipo battery
It is a 3in1 gadget with LiPo Battery monitor, Discovery buzzer & Signal loss alarm functions. Specifications: Working voltage: 5.2~26V DC, 2~6Cells LiPo Standby current less than 10mA Working current, Max 120mA (blinking & beeping) Voltage threshold setting: 3.4~3.7V/cell (Red LED) Twin loud buzzers, 85db each Ultrahigh Brightness LED, 20lm, 0.2w, Blue Size: 20x30x6mm, Weight: 7g 1. Battery monitor function (F1) Hold the button 3 seconds to enter the setting of the voltage threshold. Press button to set the alarm threshold between 3.4~3.7V/Cell(red LED) . The value will be saved & exit if no action within 10 seconds. 2. Discovery buzzer function (F2) It is easy to use the function, Just plug it in one Aux channel(e.g. Gear). Move the toggle switch to one side or another side, the BM3in1 will alarm "BeBeBeBeBe" & blue LED blink. 3. Signal loss alarm function (F3) It can warn you if you turn off the transmitter first by mistake, if you have trouble finding a model in the long grass...
Most Helpful Customer Reviews
Installation instructions are seriously lacking. You must solder two (20 ga) leads into the battery circuit. The rest are plug ins. They instruct to plug the Y cable into throttle channel in RX. But you can plug it into any channel that gets a lot of use. Am using this alarm in a glider. Throttle can go unused for minutes. So I plugged into rudder port, to avoid false alarms. Have set battery monitor for 3.7. Works great. Strong alarm signal. Discovery alarm needs aux1 channel. But aux 1 is taken up by SAFE PANIC MODE. So I use signal monitor instead for discovery...if needed.
Works great! I use this for its discovery setting. I fly in an area where there is tall grass, and I once took almost 30 minutes looking for my quad copter.
My reason for giving this 4 stars, is that for some reason, it no longer works. Just having it plugged in makes all four red LEDs blink, and the buzzer makes a ticking sound at the same speed as the blinks. I do not know what could be going on, so for now, I'm leaving this review at 4 stars, until I figure out if it's user error, or some defect or something.
Really nice to have as a backup, can be set as both a transmitter signal loss and battery voltage alarm at the same time. super cool beans
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