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16-Channel 12V Relay Module Guide

This document summarizes a 16 channel 12V relay module. The module uses Songle relays with 10A contact ratings. It has 16 optically isolated control circuits that are active low. The module connects to a microcontroller via 2.54mm pin headers to control the relays through a digital output pin being set low. Example test code is provided to toggle each relay on and off with a 200ms delay.

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200 views4 pages

16-Channel 12V Relay Module Guide

This document summarizes a 16 channel 12V relay module. The module uses Songle relays with 10A contact ratings. It has 16 optically isolated control circuits that are active low. The module connects to a microcontroller via 2.54mm pin headers to control the relays through a digital output pin being set low. Example test code is provided to toggle each relay on and off with a 200ms delay.

Uploaded by

DDGNJRC
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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16 Relay Module-12V

1.Overview

This is a relay module that operates at DC 12V. The relay uses Songle relay,

output contact capacity 10A 250VAC, 10A 30VDC, easy to use in home

appliances or industrial control.

It contains 16 control circuits, all of which are active low, that is, relays

are connected in low level. Each relay adopts optocoupler isolation, which is

safe and reliable, and has high anti-interference.


2. Specifications

 Working voltage: 12V (DC)

 The relay uses Songle relay, output contact capacity 10A 250VAC,

10A 30VDC, easy to use in home appliances, or industrial control.

 16 channels are active LOW

 Each relay has normally open and normally closed contacts

 16 channels are optocoupler isolation, safe and reliable, high

anti-interference

 With power indicator. Each of the 16 channels has a status indicator

3.Wiring method

2Pin terminal blocks: +12V GND, used to connect external drive power DC

12V.

34pin headers of 2.54mm pin pitch, for connecting microcontrollers;

GND VCC are used for powering the microcontrollers, with voltage of 5V;

Pin 1-16 are used for connecting the microcontroller’s signal end. When

the signal pin is LOW, relay is connected.


Output contacts, including normally opened and normally closed.

4.Test Code

/////////////////////////////////////////////////////////

int BASE = 2;

int NUM = 16 ;

void setup()

for (int i = BASE; i < BASE + NUM; i ++)

pinMode(i, OUTPUT);

void loop()

for (int i = BASE; i < BASE + NUM; i ++)

{
digitalWrite(i, LOW);

delay(200);

for (int i = BASE; i < BASE + NUM; i ++)

digitalWrite(i, HIGH);

delay(200);

/////////////////////////////////////////////////////////

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