DRONE BATTERY LOW VOLTAGE MONITOR BUZZER ALAME Dimension: 4.0 x 2.3 x 1.1cm (1.6 x 0.9 x 0.4inch) Package weight: 15g (0.5oz) Voltage detection precision: 0.01V Unit voltage display range: 0.5V-4.5V Total voltage display range: 0.5V-36V 1S test mode voltage range: 3.7V-30V Low voltage alarm mode: 1-8S Alarm set value range: OFF-2.7V-3.8V LOW BATTERY VOLTAGE BUZZER ALARM,Very light weight. I think even if you have telemetry it's worth getting one of these as a backup alarm. If you can hear your quad, you'll hear this - it's very loud when it goes off. These BATTERY BUZZER ALARMS are great alarms if you don't have telemetry to tell you your battery voltages. They're loud, too, so even flying a good distance away you'll hear them, Loud, bright, retains low voltage setting when disconnected. Even survived being dropped into a mud puddle... It will emit a warning BEEP-BEEP-BEEP when you reach that low voltage threshold that's loud enough to hear as long as you're flying within recommended control range with minimum background noise. High quality male and female XT60 connectors for RC batteries and motor. 10 pairs of high quality XT60 Male and Female power connectors. Ensures high-amp connection. Used in RC battery and motor. XT-60 Connector for RC Lipo Batteries and Motors 60 Amp Current Handling Bullet Connectors High Temperature Nylon Material Package Included: 1 x Lipo battery voltage checker; 2 x XT60 connectors and our best wishes. 4 x Plastic straps
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