Description:
USB interface for programming the ESP01. On-board toggle switch. UART side for serial TTL debugging by AT commands, PROG for firmware programming.
Specifications:
- USB input: 4.5V – 5.5V
- On-board 3.3v LDO Regulator for ESP device
- Working current: 300mA 3V3
- USB to serial TTL chip: CH340G
- Logic level: 3.3V
- Size: 5*1.4cm/1.97″*0.55″




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