GPO iotHub TPCB control board — specification
Technical parameters, dimensional drawings and the connection diagram of the GPO iotHub TPCB control board for electric heater integration.
Key facts
- The GPO iotHub TPCB board measures 120 × 40 mm with a 1.6 mm PCB and an assembled height of up to 29 mm.
- The board is powered by 230 V AC and switches heating loads up to 3 kW with a silent triac.
- The radio module is an Espressif ESP32-SOLO-1 with Wi-Fi 802.11 b/g/n at 2.4 GHz and Bluetooth Low Energy.
- The board has inputs for two temperature sensors: room air and heater surface.
- A built-in real-time clock with a CR2032 backup battery keeps schedules running through power cuts and switches daylight saving time automatically.
Technical parameters
| Parameter | Value |
|---|---|
| Board dimensions | 120 × 40 mm |
| Assembled height | ≤ 29 mm |
| PCB thickness | 1.6 mm |
| Mounting | M3 |
| Antenna | BLE/Wi-Fi, on-board |
| Power supply | 230 V AC nominal (70–260 V AC) |
| Load | 3 kW max (50–3000 W, resistive) |
| Switching element | Triac, 15 A max — silent, no relay click |
| Radio module | Espressif ESP32-SOLO-1, Wi-Fi 802.11 b/g/n 2.4 GHz + BLE |
| Temperature sensors | 2 × external NTC (β 3950, 10 kΩ @ 25 °C) |
| Display | 0.96″ OLED, 64 × 128, monochrome |
| Keypad connector | 2×3 or 5×1 |
| Operating temperature range | −20 … +60 °C |
| Galvanic isolation | Low-voltage side fully isolated |
| Maintained temperature | 0 … 35 °C (default, adjustable on request) |
| On-board menu languages | en, uk, pl, et, lv, lt, ru |
| Real-time clock | CR2032 backup battery, automatic DST |
| Firmware updates | Over the air (OTA) |
| Measurement accuracy | On request — being added |
| Hysteresis | On request — being added |
| Standby consumption | On request — being added |
| Weight | 50 g |
Drawings and connection diagram
Request the full documentation package
Leave your company details and we will send the complete engineering package, including documents not yet published here.
Contacts
Fill in the form below, drop us a line in messenger or email.
We will gladly answer your questions, send you a test sample, and explain how GPO Smart Heating can help your business grow.
Telegram
Development office:
Peterburi tee 38/9, 11415 Tallinn, Estonia
Distribution office:
Peterburi tee 38/9, 11415 Tallinn, Estonia