Best Low Voltage Buzzer

uxcell 20pcs 35mm Diameter Piezo Discs Piezoelectric Ceramic Copper Buzzer Film Gasket

Electromagnetic buzzer is composed of oscillator, electromagnetic coil, magnet, vibrating diaphragm and housing..
3V DC low voltage power supply, suitable for alarm application of various electronics..
Widely used in computer, printer, copier, alarm, electronic toy, car electronic equipment, telephone, timer, etc..
Stable Performance, good practicability, high quality plastic and metal material, long service life..
The buzzer will issue long alarm in relatively high voice once powered on, safe and reliable to use..

5PCS 1-8s Lipo Battery Voltage Tester, Low Voltage Alarm Mode for 2-8S, Function of Checking Your Lipo Cells Voltage.
Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe,Automatic Protects Against Reverse Connection.
Voltage Display Function and Low Voltage Alarm Funtion.
Protect the Battery from Overcharging or Overdischarging.
When the Voltage is Below the Set Value,It Will Buzzer with Red LED Light,Pre-set Value 3.3V.Push Key which Can Change the Voltage Settings and Save.

APPLICABLE BATTERY --- The digital battery monitor is suitable for 7-100V (12v 24v 36v 48v 60v 72v 84v) Ternary lithium battery, lead-acid,AGM battery, LiFePO4 battery. Default 12 volt lead acid battery ..
APPLICATION --- The battery testers can be used for testing battery voltage and capacity for electric motorcycle, motorcycle，golf cart,automotive , car, marine, RV, boat, etc..
PROTECTION ---Input reverse connection protection.The battery not waterproof and it only be used for indoor.
The product had gotten the CE certification, ,it will not be heated even which is used for a long time(The voltage must be less than 100V).
INSTALLATION --- red wire for the positive, black wire for the negative. The wires length are 39.37 inches ..
Buzzer Alarm&Temperature--- The battery monitor can set low and high voltage buzzer alarm and short press"M"key can switch voltage and temperature（Celsius)..

Type:5V Electromagnetic Active Buzzer, Material: ABS.
Rated Voltage: 5V, Operating Voltage: 4-8V, Rated Current (MAX): 30mA, Min Sound Output At 10cm: 85 dB, Resonant Frequency: 2300 +/- 300 Hz..
Uses: Active buzzer need only on the DC will beep,active buzzer internal oscillator..
High Quality: All multi-chip integrated circuits using gold wire ball bonding, complex production process, long life, stable performance, high rate of qualified products..
Package content:12pcs Electromagnetic Active Buzzer..

Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe,Automatic Protects Against Reverse Connection.
5PCS 1-8s Lipo Battery Voltage Tester, Low Voltage Alarm Mode for 2-8S, Function of Checking Your Lipo Cells Voltage.
Voltage Display Function and Low Voltage Alarm Funtion.
When the Voltage is Below the Set Value,It Will Buzzer with Red LED Light,Pre-set Value 3.3V.Push Key which Can Change the Voltage Settings and Save.
Protect the Battery from Overcharging or Overdischarging.

· APPLICATION --- The battery testers can be used for testing battery voltage and capacity for electric motorcycle, motorcycle，golf cart, automotive , car, marine, RV, boat, etc..
· APPLICABLE BATTERY --- The digital battery monitor is suitable for 7-100V (12v 24v 36v 48v 60v 72v 84v) Ternary lithium battery, lead-acid AGM battery, LiFePO4 battery. Default 12 volt lead acid battery ..
· PROTECTION ---The smart battery monitor with fully colsed protective shell, dustproof ,IPX7 Waterproof ,It can be used for indoor and outdoor. input reverse connection protection..
· INSTALLATION --- The red wire for the positive and the black wire for the negative. The wires length are 15.75 inches,we also provide double-side adhensinve for conventient installing..
Buzzer Alarm&Ttemperature--- The battery monitor can set low and high voltage buzzer alarm and short press"M"key can switch voltage and temperature（Celsius)..

Working temperature: -20 to +80 degrees Celsius..
overall size: 42x35mm / 1.65x1.38inch (DxH).
minimum sound pressure level: 80db at DC24V / 60CM.
working temperature: -20 to +80 degrees Celsius..
Continuous buzzer is very suitable for mechanical equipment, ovens, electrical cabinets, industrial applications, etc..

【Neoteck 2000 Counts 8233D PRO Pocket Digital Multimeter】 2000μF Capacitance and 200KHz Frequency Measurement, Accurately Measures Current, Voltage, Resistance, and More, Maximum Reading over Time, Auto-ranging and Continuity Buzzer.
【Large Backlit LCD Display】 Auto Polarity Display, Easy to Read Large Backlit LCD Display, Back-light Makes a Real Difference in Low Light Areas.
【Nice Protective Orange Shell with Stand Built】 The Case with Our Multimeter is Some Kind of Non Slip, Slightly Soft Plastic that Will Help with Drop Protection, The Stand Places the Device at a 45 Degree Angle and Makes the Screen Easy to See Hands Free.
【Non-Contact Voltage Tester with Wide Testing Range】 This Non-Contact Voltage Tester Voltage within 12-1000V AC, All Electric Appliances in Your Family can be Tested by it.
【Safe and Convenient】 The Voltage Pen Tester Detectes Voltage in a Non-Contact Way, So Do Not Worry about There Could be any Possibility of being Shocked by the Electricity.

Southwire doorbell wire used single conductors for connecting call bells, buzzer break systems, door chimes.
Suitable for low voltage battery or transformer circuits.