Toto spares, Toto parts, Toto spare code no : TN78-9V800 - self powered Controller,
- TOTO’s SELFPOWER technology refers to sensor faucets that generate their own electricity from the flow of water (micro‑turbine / generator) rather than relying solely on external power or batteries.
- In such systems, the kinetic energy of flowing water or a small turbine inside the faucet is converted to electrical energy (or used to charge an internal storage) that powers the sensor, control electronics, and solenoid valve.
- The master catalogue for TOTO mentions (in its descriptive text) that “micro sensor power generator integrated into the tip of the water turns the power spout … the energy from the flowing water is used to charge a battery that powers the faucet. The faucets require practically no maintenance.”
- For a similar controller (TN78‑9V900), the catalogue lists “Self Powered Controller Cold Water Flow Rate: 2 L/min” in the TOTO master catalogue.
- For TN78‑9V800 together with TEN12AV800, one listing says:
“Nguồn năng lượng: Pin dự trữ + Bộ phận tự tái tạo năng lượng”
“Năng lượng tiêu thụ: 0.4W (0.6W khi hoạt động)”
Flow: 3 L/min; Pressure: 0.05 MPa – 0.75 MPa
- So the TN78‑9V800 appears to be a self‑powered controller for a TOTO auto faucet (cold water), with internal energy harvesting + battery reserve, intended to power the sensor and valve without needing external wiring (or with minimal external wiring).
Advantages of a Self‑Powered Controller (like TN78‑9V800)
Using a self‑powered controller in a touchless / sensor faucet setup offers several benefits:
AdvantageDescription / Why it’s beneficialNo external power wiring requiredSince it generates its own power, you don’t need to arrange AC/DC power wiring at each faucet, simplifying installation and reducing wiring cost and constraints in renovation / retrofits.Redundancy / battery backupEven though energy is harvested, there is often a small reserve battery or capacitor to sustain operation when flow is low or intermittent, enhancing reliability. (As seen in the listing: “Pin dự trữ + bộ phận tự tái tạo năng lượng”)
Lower maintenance / no battery replacement (or minimal)Because energy is auto‑replenished during use, reliance on external batteries is reduced, thus lowering the need for periodic battery changes or maintenance.Energy efficiency / environmentally friendlyHarvesting the energy from water flow is a sustainable approach and reduces reliance on external electrical supply (and its losses). Also, the system only consumes power when needed.Enhanced hygiene & usabilityAs part of the sensor faucet, the controller enables hands‑free operation, which reduces contact / cross‑contamination in washrooms.Compact integrationSelf‑powered controllers can often be more compact and integrated into the faucet body (or close by) without bulky external controllers or wiring.Cost savings in electrical infrastructureIn large installations (e.g. public restrooms, commercial buildings), removing the need for power wiring per faucet saves on wiring, conduits, junctions, and maintenance.Resilience in power outagesBecause the system does not depend solely on mains electricity, brief power interruptions may not affect faucet operation (so long as water flows).
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