HLS8L-DC5V-S-C Miniature SPDT Relay 5V 10A / 120VAC for Arduino

Description

MAIN CHARACTERISTICS:

RoHS
Operating Temperature -40 ~ 70 C
SPDT circuit
Rated Current 10A / 120VAC
Coil Voltage 5V
Coil Current 72mA
Drive On 3.75V
Driver Off 0.5V
Coil Resistance 70

GENERAL	MODEL	HLS8L-DC5V-SC
MATERIALS	copper + components
COMPATIBILITY	ARDUINO
WEIGHT AND DIMENSIONS	PRODUCT WEIGHT	50 g
PACKAGE WEIGHT	1 kg
PRODUCT DIMENSIONS (L x P x A)	1.9 x 1.6 x 1.6 cm
PACKAGE DIMENSIONS (L x P x A)	5 x 3 x 2 cm
PACKAGE CONTENTS	PACKAGE CONTENTS	1 x Module

We have available datasheet for all components, should it not be present in the product download sheet, send us a message through the contact form and we will publish it as soon as possible on our website.

Tutorial: How to use Miniature SPDT Relè HLS8L-DC5V-S-C

The HLS8L-DC5V-S-C relay is ideal for controlling electrical circuits with Arduino. It uses the 5V signal from the Arduino to activate or deactivate a 120VAC circuit, allowing the management of loads up to 10A.

What you need

• Arduino uno or compatible
• jumper cable
• external power supply 120VAC
• fuse

Steps

1. Connect the relay pins to the Arduino using jumper wires: COM to the load, NC and NO to the external power supply terminals, VCC to +5V Arduino, GND to Arduino ground.
2. Check the activation voltage on the datasheet for proper relay control with the Arduino.
3. Write an Arduino sketch that controls the relay state (HIGH and LOW).
4. Test the system by connecting a small load to COM and NC/NO, alternating its activation through the code.
5. Verify that the fuse is adequate for the maximum current of the circuit to be controlled.
6. Use line protectors if necessary to protect the Arduino from overheating.

Example code

const int relayPin = 7; // definisci pin dell'Arduino
void setup() {
pinMode(relayPin, OUTPUT);
}
void loop() {
digitalWrite(relayPin, HIGH); delay(1000);
digitalWrite(relayPin, LOW); delay(1000);
}

Mini project

Create an intelligent lighting system that turns on or off a lamp connected to the relay in response to Arduino commands.

Common mistakes

• Connect the load directly to the Arduino output port.
• Do not use an appropriate fuse to protect the power supply.
• Ignore the relay activation voltage on the datasheet.
• Omit line protectors between Arduino and the relay.

Recommended accessories

• Variable fuses
• Line protector
• 120VAC power supply
• Jumper wire

Frequently asked questions

How can I protect the Arduino?
Add a fuse and line protectors between the relay and the Arduino.

Which pin should I use to control the relay?
Use one of the Arduino’s output pins, usually 2-13.