SEA890 No-Local-Interface Smart Thermostatic Radiator Valve

This is what sets the SEA890 apart from every other TRV in the market. It has no local control interface – no buttons to press, no display to read, no dial to turn. It is a pure actuator that exists solely to receive and execute remote commands. No local adjustments, no tampering, no user confusion.

Unlike open‑loop actuators that send commands blindly, the SEA890 continuously measures actual valve position against the target. Any deviation is detected and corrected instantly. 0.05mm resolution, ±0.6℃ control accuracy, full‑stroke response ≤20s.

On power‑on, automatically detects and adapts to each valve's unique mechanical stroke limits – defining the precise safe travel range. Eliminates stalling and gear damage, ensures close‑off sealing reliability, and provides accurate reference for percentage‑based opening commands.

Powered by 2 standard AA batteries delivering 2.5+ years of operation. With no display and no user interaction, power consumption is minimized – making the SEA890 truly "install and forget" for commercial deployments.

868/915MHz Sub‑GHz band penetrates concrete and steel. 100m point‑to‑point, 500m+ with gateway. Native LoRaWAN support enables seamless integration into existing LoRaWAN network infrastructure – no proprietary gateway required.

The SEA890 has no onboard thermostat logic. It operates exclusively on remote commands – open, close, or set to a specific percentage – issued via LoRaWAN from a gateway, cloud platform, or BMS. Ideal for centralized control architectures.