Voltage Detection Sensor Module-25V 

VOLTAGE DETECTION 3 Pin DC 0-25V Voltage Detection Sensor Module Range Voltage Sensor Circuit Board Module 3 Pin Voltage Testing Sensor For Arduino Electronics Circuitry & Parts

Voltage Detection Sensor Module 25V module is based on the principle of resistive voltage divider design, it can make the red terminal connector input voltage to 5 times smaller. Arduino analogue input voltages up to 5 v. The voltage detection module input voltage is not greater than 5Vx5=25V (if using 3.3V systems, input voltage is not greater than 3.3Vx5=16.5V).

It has a limit of Arduino analog input of 5 VDC only. So if you wish to measure higher voltages,  you will need to resort to another means.  One way is to use a voltage divider.  It is fundamentally a 5:1 voltage divider using a 30k and 1 7.5k ohm resistor.

Note: 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.

Features:-

• Voltage input range: DC 0-25V
• Voltage detection range: DC 0.02445V-25V
• Voltage Analog Resolution: 0.00489V
• DC input connector: Terminal cathode connected to VCC, GND negative pole
• Output interface: “+” connect 5/3.3V, “-” connect GND, “s” connect the Arduino AD pins

Specifications:

• Dimensions: 28 x 14 x 13 mm .
• Weight: 4 gm.
• Input Voltage range: DC0 to 25 V
• Voltage detection range: DC 0.02445 V to 25 V
• Analog Voltage resolution: 0.00489 V
• Output Interface: “+ ” connected 5/3.3V, “-” connected GND, “s” connected Arduino AD pins
• DC input interface: red terminal positive with VCC, negative with GND
• You can also use the IICLCD1602 LCD to display voltage.
• By 3P connector, connect this module with the expansion of board Arduino, which not only makes it easier for you to detect voltage battery.

INPUT:

• GND –  This is where you connect the low side of the voltage you are measuring.   * Caution:  This is the same electrical point as your Arduino ground.
• VCC – This is where you connect the high side of  the voltage you are measuring (0 – 25V)

OUTPUT:

• S:  This connects to your Arduino analog input.
• – (or minus):  This connects to your Arduino ground.
• +:  This is not connected.  It does absolutely nothing.