Unit DCSSR
SKU:U140
Description
Unit DCSSR is a DC-to-DC single-phase solid-state relay controller kit, which includes a single-phase solid-state relay + ESP32C3 core control board. It supports three working modes: button control, I2C slave, and Modbus networking. The integrated programmable full-color RGB LED can be used for various status indications. Compared to traditional mechanical relays, this relay is a contactless switch assembled and solidified using semiconductor components. It has a series of advantages such as fast switching speed, high operating frequency, long service life, low noise, and reliable operation without sparks. It is widely used in digital program-controlled devices, motor control devices, temperature control devices, data processing systems, and computer terminal interface circuits, especially suitable for special occasions with frequent actions, explosion-proof, moisture-proof, and corrosion-resistant requirements.
Tutorial
Features
- Single-phase solid-state relay
- Three working modes:
- Button control
- I2C slave (supports device I2C address configuration)
- Modbus networking (supports device ID configuration)
- Programmable full-color RGB LED
- RS485PWR interface (supports 9-24V device power supply)
Includes
- 1x Unit DCSSR
- 1x Single-phase solid-state relay
- 2 x 3.96-4P terminal blocks
- 1 x HY2.0-4P Grove connection cable (20cm)
- 1 x Communication protocol manual
Applications
- DC circuit on/off
- Motor equipment control
- Temperature control equipment
Specifications
| Specification | Parameter |
|---|---|
| Controller MCU | ESP32C3 |
| Communication Interface | I2C @0x50 |
| Programmable RGB LED | SK6812 |
| Load Current | 10A |
| Input Control Voltage | DC 3 ~ 32V |
| Load Voltage | DC 24 ~ 220V |
| 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 Size | 45.0 x 30.7 x 11.5mm |
| Package Size | 147 x 90 x 40mm |
| Product Weight | 112.6g |
| Gross Weight | 137.8g |
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.
- Press and hold the button to select and save the current mode.
- Load wiring example diagram
PinMap
Unit DCSSR
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
Model Size
Softwares
Arduino
