Product Description
Heltec HXYP-RN01 5V 12V 24V Low Voltage Alarm Module - Anti-Overcharge Buzzer Sound, Prevent Battery Over-Discharge
Heltec HXYP-RN01 5V 12V 24V Low Voltage Alarm Module - Anti-Overcharge Buzzer Sound, Prevent Battery Over-Discharge

Function Description
Used for battery power monitoring. When the battery voltage is lower than the set value, the LED on the module lights up, and the buzzer emits sound.
When the battery voltage rises above the set value, the red light goes out and the buzzer stops sounding.
Alarm voltage adjustment method
The module is dispatched with a preset alarm voltage value by default. Once the goods are received, they can be used directly without adjusting the voltage.
If you want to adjust the voltage value, you need to use a multimeter to do so. Turning it clockwise can increase the sensitivity.
Alarm Voltage for Different Batteries
5V battery: When the battery voltage is lower than about 4.5V, the red LED lights up and the buzzer sounds an alarm.
12V battery: When the battery voltage is lower than about 11.5V, the red LED lights up and the buzzer sounds an alarm.
24V battery: When the battery voltage is lower than about 22.5V, the red LED lights up and the buzzer sounds an alarm.







About Prime Living
Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.
We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.
Shipping policy
We carefully handle each order to ensure your package arrives quickly and safely. Please note that factors such as weather, postal traffic, or carrier performance may occasionally cause delays beyond our control.
We provide free shipping and dispatch all orders within 2 business days of payment, often sooner. All shipments are sent via international express air shipping, with a tracking number provided so you can follow your order every step of the way.
. Please provide a physical address, as we do not ship to P.O. Boxes.
Returns
Your satisfaction is important to us. Hexlight offers a 14-day Free return policy: if you are not fully satisfied with your purchase, you may request either a full refund or an exchange. All return shipping costs are fully covered by us.
Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.