This DC Voltage Sensor Module is essentially a 5:1 potential divider circuit built using precession resistors for high accuracy.
The Arduino analog input is limited to a 5 VDC input. If you wish to measure higher voltages,this module allows you to measure voltages of 0-25V. Keep in mind, you are restricted to voltages that are less than 25 volts. More than that and you will exceed the voltage limit of your Arduino input.
Description
Voltage input range : DC 0-25 V;
Operating voltage output : 3.3V – 5V MAX
Voltage detection range : DC0.02445V – 25V
Voltage analog resolution : 0.00489
Output Interface : “+ ” connected 5/3.3V, “-” connected GND, “s” connected Arduino AD pins
DC input interface : red terminal positive with VCC, negative with GND
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