H3E22WZY7

SC01B Liquid Level Detector

Overview

The Xiamen Jingzun SC01B liquid level detection principle: CIN2 channel (collects changes in liquid capacitance) ➖ CIN1 channel capacitance > chip threshold. A value greater than the chip threshold indicates the presence of water; otherwise, no water is detected.

When the chip detects liquid, it outputs a low-level signal, illuminating the LED indicator
. If no liquid is detected, it outputs a high-level signal, turning off the LED indicator.
Sensitivity is adjusted by adjusting capacitors C1 and C4; smaller capacitors result in higher sensitivity, and vice versa.
The default sensitivity is 10pF and 10pF in series, meaning the CIN1 channel capacitor is 5pF.

Design Files

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Update:2026-03-27 02:34:58

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