Toto spares, Toto parts, Toto spare parts, Spare code no : TH581321R - Sensor unit,
hat It Does in TOTO Fixtures
This sensor unit is a key component of touchless / sensor-activated faucets (and similar water control devices). It works by detecting objects (your hands) in front of the faucet and sending a signal to the valve to start or stop water flow. In technical terms, it’s a photocell / optical sensor that triggers action when reflected light changes — i.e., when hands are placed in the sensing zone.
Typical use cases include:
✔ Automatic activation of water flow when hands are present
✔ Hands-free operation of taps/faucets
✔ Integration with water-saving and hygiene features on public or commercial wash basins 配管 水道 部品・水まわりの専門店ONLINE JP（オンライン）
🌟 Advantages of TH581321R (Sensor Unit)
✅ 1. Hygienic, Touch-Free Water Activation
Hands never need to touch the faucet to turn water on/off, greatly reducing germ spread — especially important in public restrooms, hospitals, hotels, and kitchens.
This touchless operation helps prevent cross-contamination and keeps shared spaces cleaner.
✅ 2. Water Efficiency
When used with automatic faucets, the sensor helps reduce unnecessary water use:
- Water flows only when needed (when hands are detected).
- Stops immediately when hands are removed, preventing waste.
Many TOTO sensor faucets also use Self-Power technology that generates electricity from water flow, improving overall efficiency — though TH581321R itself is the sensing element. TOTO Europe
✅ 3. Reliable Activation
Optical sensors like TH581321R are designed to detect even small changes in reflected light reliably, ensuring consistent faucet performance in varied lighting and installation conditions.
This reliability is one of the reasons sensor faucets are preferred in high-traffic facilities (airports, malls, commercial bathrooms). The technology is proven to be robust and low-maintenance. baytoty.com
✅ 4. Reduced Maintenance
Sensor-activated faucets reduce wear and tear from repeated manual operation (turning handles), which can:
- Extend the life of the fixture
- Lower service costs
- Minimize mechanical breakdowns
While batteries or power systems may still require attention, the sensor itself has no moving parts, which improves durability.
TOTO : Control unit, toto Powercable, toto Rubber flapper, toto Signal Cable& Conduit Pipe, toto Right hook,
toto Screw, toto Concealed Automatic Urinal Flush Valve, toto Shower Hanger & Screw, toto check nut & lock on cartridge, toto Controller Unit, toto Cartridge, toto Fill Valve, toto HANDLE/KNOB, toto SSBolts &Nuts, toto PRESSURE CONTR.., toto Avante Wall Hung Toilet W/Invisible Fixing Kit, toto Flexible Hose, INDIA.
TOTO : Base Plate Assy, toto Soft Landing Unit, toto Soft Landing Unit, toto Damper dryer for WL .., toto DUMPER / PLASTIC LID ON WAND, toto Indication Substrate Assembly, toto Fixed Shower Head, toto Bath & Spout, toto Handle,
Toto thermostatic knob, toto Flange Cap, toto Flange Plate, toto Clamp for valve connector, toto FRAME, toto sensorunit, toto Towel Ring, toto IN WALL SENSOR URINAL FLUSH VALVE, toto Ceramic cartridge for Faucets DUBAI.
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