Unit ACSSR

SKU:U139

Description

Unit ACSSR is a single-phase AC solid-state relay control kit, containing a single-phase solid-state relay and an ESP32C3 core control board. It supports three working modes: Button Control, I2C Slave, and Modbus Networking, and integrates a programmable full-color RGB LED for various status indications. Compared with traditional mechanical relays, solid-state relays are made of semiconductor devices, designed with no contacts, and have advantages such as fast switching speed, high frequency, long life, low noise, reliable operation, and no arc spark. This product is suitable for applications such as industrial automation, motor control, and temperature control systems.

Tutorial

Arduino IDE

This tutorial will introduce how to program and control the Unit ACSSR device through Arduino IDE.

Features

Single-phase solid-state relay
Supports load supply voltage: AC 24 ~ 480V
Three working modes:
- Button Control
- I2C Mode (supports I2C address configuration)
- Modbus Mode (supports device ID configuration)
Programmable full-color RGB LED
RS485PWR control interface
- For Modbus control
- Supports DC 9 ~ 24V power input
- Communication rate configuration: 115200bps 8N1
- Default ID: 0x0004
HY2.0-4P Grove control interface
- For I2C communication control
- Supports DC 5V power input
- 3.3V logic level communication

Includes

1 x Unit ACSSR
1 x Single-phase solid-state relay
2 x 3.96-4P terminal blocks
1 x HY2.0-4P Grove Cable (20cm)
1 x Communication protocol manual

Applications

AC circuit switching
Motor equipment control
Temperature control equipment

Specifications

Specification	Parameter
Controller MCU	ESP32C3
Programmable RGB LED	SK6812
Load Current	10A
Input Control Voltage	DC 3 ~ 32V
Load Voltage	AC 24 ~ 480V
Input Control Current	5 ~ 20mA
Off-state Leakage	≤5mA
On-state Voltage Drop	≤1.6V
Safe Operating Current	Resistive load: 50% Inductive load: 50%
Electrical Life	≥1 million times
Indicator Light	Red (On: closed / Off: open)
Product Weight	112.6g
Gross Weight	137.8g
Product Size	80 x 45 x 31mm
Package Size	147 x 90 x 40mm

Learn

Working Mode Configuration

Before use, please refer to the following process to configure the working mode:

With the device powered off, press and hold the middle button.
Power on the device. When the RGB LED blinks rapidly, it indicates that it has entered mode configuration status.
Click the button to switch modes:

Green light: Manual button mode, where the middle button controls the ON/OFF during operation.
Red light: I2C communication mode, where the device connects to the I2C bus via the HY2.0-4P Grove interface for control.
Yellow light: Modbus communication mode, where the device connects to the Modbus bus via the VH3.96-4P interfaces on both ends for control.