Happymodel DT-B90 90dBi Finder Buzzer Alarm 4.5-9V Input Built-in Battery with LED Light for RC Drone

Happymodel DT B90 90dBi Finder BuzzerAlarm4 5 9V Input Built in Battery with LED Light for RC DroneSpecification Brand name HappymodelItem name DT B90 90dBi Finder BuzzerInput voltage DC 4 5 9 0VSize 25x16x15mmWeight 5 83gFeaturesAs a stand alone buzzer it can be used regardless of the form of drones or the battery for main power supply of drones Integrated LiPo battery charging circuit The battery can be recharged at any time by connecting to a powered on droneIt is small light and solidly designed with heat shrink tube structure to protect the product Operation and Usage ExplanationPress the button and hold on for 1 2 second a power on alarm is triggered which will sounds like 1 2 3 with a flashing white led If there is no VCC5V0 detected for a certain period of time about 30 seconds after the power is turned on a missing alarm will automatically sound B B B This situation occurs when a drone is crashed and the main battery supply is lost so the VCC5V0 output of the FC lost at the same time If continuous VCC5V0 is present and detected after a drone crash then we could triggered the alarm by transmitter Aux channel switch that pre configured to BEEPER feature After use to turn off the power press the button and hold on for 1 2 second then a power off alarm is triggered which sound like 3 2 1Package Included 1 xDT B90 90dBi Finder Buzzer1 x Cable wire