DFR0251

DFR0251 Datasheet

16A Relay Module SKU:DFR0251

Part	Datasheet
DFR0251	DFR0251 (pdf)

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16A Relay Module SKU:DFR0251 Contents • 1 Introduction • 2 Specification • 3 Relay Module Pinout • 4 Test Connection Diagram • 5 Sample Code • 6 Plugging in an appliance Introduction A relay is an electrically operated switch, which has a control system also known as the input circuit and the controlled system also known as the output circuit , usually used in automatic control circuit.It is actually "automatic switch" ,using a small electric current to control a larger current.Therefore, the relay has the effects on the automatical automatic adjustment, security, conversion circuit in the circuit and so on Relays are used where it is necessary to control a circuit by a low-power signal with complete electrical isolation between control and controlled circuits , or where several circuits must be controlled by one signal. The 16A relay module can be used in interactive projects. It can also be used to control the lighting, electrical and other equipments. It can be controlled through the digital IO port, such as solenoid valves, lamps, motors and other high current or high voltage devices. The main difference between 16A Relay module and the old version relay module is the Max switching current.The max switching current of old version is 10A,and now the new version is 16A. Specification • Contact Rating Res. Load :16A 277VAC/24VDC • Maximum switching voltage 400VAC NO • Max. switching current 16A • Max. switching power 4700VA • Operate tiem at nomi. Vot. 10ms max • Release time at nomi. Vot. 5ms max • Type Digital • Single relay board • Digital Interface • Control signal TTL level Relay Module Pinout There are a total of 7 pins on the relay module board. Link Arduino Side: Signal Vcc GND Link Appliance Side: input positive wire from appliance N/A NC not connected NC OUT1 Normally closed, which means that when the relay is off a digital low "0" is received from Arduino the device is ON NO OUT2 Normally open, which means that when the relay is on a digital high "1" is received from Arduino the device is ON. WARNING Please be very carful not to play with live circuits! 120V or 220V should not be taken lightly. Make sure the appliance to be tinkered with is unplugged from mains. DO NOT CONNECT IT TO THE WALL WHILE MESSING WITH THE CABLE! Test Connection Diagram Sample Code # Product 16A Relay Module # SKU DFR0251 # Description: # This sample code is combined with the figure above to test the relay m odule whether works normally. # Link: // Signal # GND -- GND # VCC -- VCC # COM -- 13 // INPUT # NO -- LED + // OUTPUT # LED - -- GND int Relay = 3; void setup pinMode 13, OUTPUT ; //Set Pin13 as output digitalWrite 13, HIGH ; //Set Pin13 High pinMode Relay, OUTPUT ; //Set Pin3 as output void loop

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16A Relay Module SKU:DFR0251

Contents
• 1 Introduction
• 2 Specification
• 3 Relay Module Pinout
• 4 Test Connection Diagram
• 5 Sample Code
• 6 Plugging in an appliance

Introduction

A relay is an electrically operated switch, which has a control system also known as the input circuit and the controlled system also known as the output circuit , usually used in automatic control circuit.It is actually "automatic switch" ,using a small electric current to control a larger current.Therefore, the relay has the effects on the automatical automatic adjustment, security, conversion circuit in the circuit and so on Relays are used where it is necessary to control a circuit by a low-power signal with complete electrical isolation between control and controlled circuits , or where several circuits must be controlled by one signal.

The 16A relay module can be used in interactive projects. It can also be used to control the lighting, electrical and other equipments. It can be controlled through the digital IO port, such as solenoid valves, lamps, motors and other high current or high voltage devices.

The main difference between 16A Relay module and the old version relay module is the Max switching current.The max switching current of old version is 10A,and now the new version is 16A.

Specification
• Contact Rating Res. Load :16A 277VAC/24VDC
• Maximum switching voltage 400VAC NO
• Max. switching current 16A
• Max. switching power 4700VA
• Operate tiem at nomi. Vot. 10ms max
• Release time at nomi. Vot. 5ms max
• Type Digital
• Single relay board
• Digital Interface
• Control signal TTL level

Relay Module Pinout

There are a total of 7 pins on the relay module board.

Link Arduino Side:

Signal Vcc GND

Link Appliance Side:
input positive wire from appliance N/A NC not connected NC OUT1 Normally closed, which means that when the relay is off a digital low "0" is received
from Arduino the device is ON NO OUT2 Normally open, which means that when the relay is on a digital high "1" is received from

Arduino the device is ON.

WARNING Please be very carful not to play with live circuits! 120V or 220V should not be taken lightly. Make sure the appliance to be tinkered with is unplugged from mains. DO NOT CONNECT IT TO THE WALL WHILE MESSING WITH THE CABLE!

Test Connection Diagram

Sample Code
# Product 16A Relay Module
# SKU DFR0251
# Description:
# This sample code is combined with the figure above to test the relay m odule whether works normally.
# Link:
// Signal
# GND -- GND
# VCC -- VCC
# COM -- 13
// INPUT
# NO -- LED + // OUTPUT
# LED - -- GND
int Relay = 3;
void setup
pinMode 13, OUTPUT ;
//Set Pin13 as output
digitalWrite 13, HIGH ;
//Set Pin13 High
pinMode Relay, OUTPUT ;
//Set Pin3 as output
void loop

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Datasheet ID: DFR0251 508688