
U140 · M5Stack

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… (M5Stack U140)
| Part number | U140 |
|---|---|
| Manufacturer | M5Stack |
| Category | Relays › Relay Modules |
| Pins | 4 |
| Current | 10 A |
Single-phase DC SSR Unit (CDG1. 1DD-10A) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | SCL | input | |
| 2 | SDA | bidirectional | |
| 3 | 5V | power | |
| 4 | GND | ground |
Schematic symbol and footprint
Schematic symbol
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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