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1. Touch control, on/off switch and fading light, fading out function;

2. Brightness control in four levels (25%, 50%, 75%, 100%)

3. power detection: detect the battery voltage. (Single battery voltage: 3.0V-4.2V, divided into five grades to detect 3.0v-3.25v-3.5v-3.75V-4.0V)

Main Chip: Haier HR6P61P2S4L