| Price | $2 |
|---|---|
| Category | Relays |
| Availability | In stock |
| Delivery | Shipped across Lebanon, or collect from the lab |
A carrier board that turns an ESP-01 into a Wi-Fi mains switch. The ESP-01 drops into the yellow 2x4 socket, a PC817 optocoupler sits between it and the relay driver, and a Songle SRD-03VDC-SL-C relay brings NO, COM and NC out on a screw terminal printed 10 A at 250 V AC / 10 A at 30 V DC. Feed it 5V on the two-way terminal and the on-board regulator looks after the ESP-01's 3.3V. A cheap, compact base for a DIY smart plug.
Key features
- 2x4 socket for an ESP-01 / ESP-01S Wi-Fi module
- PC817 optocoupler between the ESP and the relay driver
- Songle SRD-03VDC-SL-C relay, SPDT
- Contacts printed 10 A at 250 V AC / 10 A at 30 V DC
- 5V input on a screw terminal, on-board 3.3V regulator
- ESP-01 module is not included
Details
Specifications
| Model | ESP-01 relay carrier board |
|---|---|
| Host module | ESP-01 / ESP-01S (ESP8266), sold separately |
| Model (relay) | Songle SRD-03VDC-SL-C |
| Contact configuration | SPDT (NO / COM / NC) |
| Contact rating | 10 A at 250V AC / 10 A at 30V DC (as printed) |
| Coil voltage | 3V DC (driven on-board) |
| Isolation | PC817 optocoupler on the control path |
| Supply | 5V DC on a 2-way screw terminal |
| Terminals | 3-way screw terminal for the load, 2-way for power |
