12V Battery Sound Light Alarm Buzzer Prevent Over Discharge Controller Protection Module DIY Kit

Package : SMDis_customized : YesModel Number : 12V AccumulatorOperating Temperature : StandardDissipation Power : StandardSupply Voltage : StandardApplication : ComputerCondition : NewType : Logic ICs : Mainland China
1. The scope of application of this module:Mainly used for battery (9V or 12V) voltage monitoring, simple and practical, with sound and light alarm prompts.2. Product function:When the battery is under voltage, the buzzer will make a sound of "Di Di Di Di", and the red LED indicator will light up at the same time. When the battery voltage rises above the set value by itself, the buzzer will stop alarming.2. Brief description:1. Size: 3.0CM length*2.9CM width*1.4CM height     Fixed hole distance: 2.2CM fixed hole diameter 3MM2. Main chip: LM358;9V battery: When the battery is over-discharged (battery voltage is lower than about 8V), the red indicator light will be on and the buzzer will sound to realize sound and light alarm, so as to realize the control of the battery discharge state, so as to prevent the battery from being over-discharged and damage the battery;12V battery: When the battery is over-discharged (battery voltage is lower than about 10.4V), the red indicator light will be on and the buzzer will beep, realizing sound and light alarm, so as to realize the control of the battery discharge state, so as to prevent the battery from being over-discharged and damaging the battery;Three advantages:1. With sound and light alarm, it is directly clear whether there is a protective effect;2. The module input has reverse connection protection, and the polarity of the input power supply will not be burned out. But there is no overvoltage protection, if the input exceeds 15V, the chip on the module will burn out.4. Instructions for use9V battery: The module inputs 9V, when the voltage between the 2nd pin and the 4th pin of LM358 is adjusted to about 5.78V, the alarm voltage of the module is 8V (we have adjusted it before delivery, and you don’t need to adjust it. ). Adjust clockwise, the voltage of 2 and 4 pins decreases, and the sensitivity increases.12V battery: When the module inputs 12V, when the voltage between the 2nd pin and the 4th pin of LM358 is adjusted to about 6.05V, the alarm voltage of the module is 10.4V (we have adjusted it before delivery, so you don’t need to adjusted). Adjust clockwise, the voltage of 2 and 4 pins decreases, and the sensitivity increases.