Working voltage: 4.5V - 5.5V (On-board 3.3v LDO Regulator)
Working current: 300mA(LDO regulator can supply)
Selectable working mode: On-board toggle switch. UART side for serial,TTL debugging by AT commands, PROG for firmware programming
USB to serial TTL chip: CH340G
Logic level: 3.3V
Applications: Home automation, sensor networks, industrial control
Color: Black
Material: PCB
Package Contents:
1 x Printer Motherboard
Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.