nice digital LED Voltmeter that you install in-dash or for a battery box, Ham Radio Go
kit, solar whatever where you need to read 12-24 Volts DC. To monitor the
storage-battery voltage or total output, with reverse connection protection function.Use it to monitor your storage-battery voltage or charging circuit. Red LED Light. Will fit typical 29mm round opening for this type of meter. Input voltage 6 ~ 33V. Size: 35mm top
display or hole opening required is about 29mm.
* Red Digital LED Voltmeter* Input Voltage:12V-24V* Output Volts 5VDC* Can Measure
voltages: 6 ~ 33V