Easy to Connect to the Internal Circuit of the Car, Battery, or Motorcycle, Convenient and Simple Wiring, 0.28 inch Dc 4.5v 30v Red Digital Voltmeter Voltage Display Module With the Reverse Connection Protection Function and Fine Adjustment Function, the Reverse Connection Won't Burn. To avoid burnout, the maximum input voltage must not be higher than 40V. The display brightness will dim when the voltage is less than 3.0V, however, the correct measurement will not be impacted. and Two digits are displayed after the decimal point when measuring voltages under 10V; one digit is displayed after the decimal point when measuring voltages over 10V. It can address the measuring precision requirements of battery users.

Specifications:

• Working voltage: DC2.4 ~ 40V (with reverse connection protection function)
• Detection voltage: DC2.4 ~ 30V
• Working current: <30mA
• Display mode: 0.28 "LED, red
• Measurement rate: ≥200mS / time
• Measurement accuracy: 3 ‰
• Low working voltage: + 2.4V
• Maximum working voltage: + 40V
• Working temperature: -10 ～ + 65 ℃
• Operating humidity: 10 to 80% (non-condensing)
• Working pressure: 80 ～ 106kPa
• Sun exposure: no direct exposure

Package Includes:

1 x Red LED DC2.4 ~ 40V Module