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Automation PCBs
8-Channel Home-Automation PCB, Model-SMT8N25 (fully assembled)
Availability:
5 in stock
- Model SMT8N25 – ESP32-based 8-channel relay board for smart-home projects
- Controls up to 8 AC appliances; heavy-duty screw terminals resist arcing
- Built-in ESP32-WROOM with Wi-Fi + BLE; ready for Blynk, ESP-RainMaker, KME Smart, CADIO, Arduino IoT Cloud
- USB-C programming port (CP2102N auto-reset) — no external programmer needed
- On-board safety features: fast-blow fuse + optocoupler isolation between mains and logic
- Plug-and-play JST headers for wall switches, DHT sensor, IR receiver, and buzzer
- Exposed UART, 3.3 V, 5 V, GND pins for easy expansion
- Slim 142 × 70 mm PCB fits behind standard 6-/8-gang switch plates
₹2,999.00 ₹3,999.00
5 in stock
CompareDeploy home automation in minutes. Our 8-Channel Home-Automation PCB — Model SMT8N25 packs everything you need—controller, safety circuitry, and expansion headers—onto a compact board that slips straight behind a standard wall switch. Just flash your firmware, wire the loads, and connect to the cloud platform of your choice.
Key Features
- Model SMT8N25
- Eight independent AC relays for lights, fans, sockets, and more
- ESP32-WROOM on board—dual-core MCU with Wi-Fi + BLE
- Ready for popular IoT clouds: Blynk, ESP-RainMaker, KME Smart, CADIO, Arduino IoT Cloud
- USB-C programming port with auto-reset; no external programmer required
- On-board safety: fast-blow fuse and optocoupler isolation between mains and logic
- Plug-in headers (JST-XH) for local switches, DHT temperature-humidity sensor, IR receiver, and buzzer
- Exposed expansion pins: UART TX/RX, 3.3 V, 5 V, and GND
- Heavy-duty screw terminals resist arcing and heat
- Full silkscreen labeling—relay outputs, sensor headers, and GPIO map printed on the underside
- Slim footprint: 142 mm × 70 mm—fits neatly behind 6- or 8-gang switch plates
Technical Specifications
| Parameter | Value |
|---|---|
| Microcontroller | Espressif ESP32-WROOM-32E, 240 MHz, 4 MB Flash |
| Relay Channels | 8 × SPST-NO mechanical relays |
| Relay Rating * | 250 VAC / 10 A max · 30 VDC / 10 A max |
| Logic Supply | 5 V DC (on-board buck converter from mains) |
| Programming Interface | USB Type-C (CP2102N auto-reset) |
| Protection | 1 A fast-blow fuse, optocoupler isolation |
| Sensor Headers | 3-pin JST-XH for DHT; 3-pin JST-XH for IR |
| Switch Inputs | 8 × 3-pin JST-XH (active-low) |
| Extra I/O | UART TX, UART RX, 3.3 V, 5 V, GND, buzzer header |
| Dimensions | 142 mm (L) × 70 mm (W) × 18 mm (H) (without terminals) |
| Weight | 78 g ± 5 g |
Package Contents
- 1 × ESP32 8-Channel Home-Automation PCB, Model SMT8N25 (fully assembled )
Add this board to your next smart-home project and unlock seamless control—locally or from the cloud.
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