30A Serial Output Hall Effect Current Module with Double Digit Diaplay

This compact and efficient current monitor module is able to measure current from 0
A to 30A accurately at-40 ~ 85 ℃. It can send the data serially in BCD format.
It has an inbuilt 2 digits seven segment display to show the instantaneous current.

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Specifications:
Sensor Type: Hall Effect
Material: ABS
PCB Colour: Blue
Product version: v1.0
Power input: + 5V
Power consumption: <30mA
The Hall coefficient of current sampling
resolution: 22.6 mV/ A
Product Size: Approx., 4.5 * 5.2 * 1 cm / 1.8 *
2 * 0.4 inch

Pin
Description and connection

Pin Name	Description
+5V	This is the power supply pin for the module. Connect this pin to a regulated 5 V supply.
GND	Power Ground
TXD	This pin sends the data to the microcontroller/PC Serially at the baud rate of 9600 bps in the BCD format. The data contains two bytes per frame. The BCD for the higher four bits of the first byte represents the polarity. Where A denotes positive and the B denotes the negative. The BCD code for the lower four bits of the first byte represents the tenth value of the current. The BCD code for the higher four bits of the second byte represents the ones value of the current. The BCD code for the lower four bits of the second byte represents the first value after the decimal of the current.
Vout	This pin the alarm status pin. This pin goes high with the current exceeds the set limit. A simple buzzer, alarm, or microcontroller pun can be connected to this.
D_Comp	This pin is used to set the maximum current limit. We need to provide the voltage to this pin. The formula to set the voltage is as V=2.5+I*K. Where K is a constant whose value is 26mV/A.
Input+	The positive terminal of the current flowing circuit is connected here
Input-	The negative terminal of the current flowing circuit is connected here