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Product Description: 1-8s low voltage buzzer alarm is a module that integrates two function power display and low voltage alarm (low voltage can be adjusted). It can be used as an alarm in the model or as a voltage checker on the workbench. Test the working condition of the lithium battery to protect the battery from over-charging or over-discharging. Specification: 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: 2S-8S Alarm Set Value Range: OFF-2.5-3.8 Size: 40x25x11mm Use: Can be used for 1s-8s Lipo/li-ion/LiMn/li-fe battery detection Package: 2pcs 2 IN 1 1-8s Low Voltage Buzzer Alarm