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12V battery sound and light alarm against over-discharge protection board, low voltage / under voltage protection module
Description:
First,the scope of the application of this module:
Mainly used for battery (9V or 12V) voltage monitoring, simple and practical, all sound and light alarm.
Second, product function:
After the battery is under the pressure of the buzzer to send "drop" of the sound, while the red LED indicator lights up, when the battery voltage from the set up to more than the setting value, the buzzer alarm.
Two, brief description:
1, size: 2.9CM*3.0CM
2, the main chip: LM358;
9V battery: when the battery has been placed (battery voltage lower than 8V), the red indicator lights up and the buzzer is called, to achieve sound and light alarm, so as to achieve the battery discharge state, in case of battery is too discharge, damage to the battery;
12V battery: when the battery has been placed (battery voltage lower than 10.4V), the red indicator lights up and the buzzer is called, to achieve sound and light alarm, so as to achieve the battery discharge state, in case of battery is too discharge, damage to the battery;
Advantages:
1, with sound and light alarm, there is no protection of the direct and clear;
2, input module with reverse connection protection, input power supply polarity will not burn. But there is no overvoltage protection, if the input is over 15V, it will burn out the chip module.
 
Package Included:
1 Pcs 12V Battery Protection module
 
32799041240. - yikesu