The induction faucet and induction flush valve in the bathroom of the building are all TOTO s, now

It is recommended to replace the whole set, such as replacing the original TOTO parts at a high price, it is better to replace it with a new one, and the original installation box can be retained.

Try to choose a transformer with a large output current and a setting circuit, so as to be safe. According to my experience, the maximum voltage of two dry batteries is 3V, and at such a low voltage, the reliability and sensitivity of the control circuit are not easy to modulate, so the voltage required for the control circuit is generally relatively high (such as 9-12V). It is highly likely that the circuit also contains a DC-DC booster, so the required power supply load capacity should be larger.