Keyestudio Smart Little Turtle Robot V3 Manual page 115

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Transmission rate: Asynchronous: 6K bytes ; Synchronous: 6k Bytes
Security feature: Authentication and encryption
Supporting service: Central & Peripheral UUID FFE0, FFE1
Power consumption: Auto sleep mode, stand by current 400uA~800uA,
8.5mA during transmission.
Power supply: 5V DC
Working temperature: –5 to +65 Centigrade
(3) Components
(3) Connection Diagram
1. STATE: state test pins, connected to internal LED, generally keep it
unconnected.
2. RXD: serial interface, receiving terminal.
3. TXD: serial interface, transmitting terminal.
4. GND: Ground.
5. VCC: positive pole of the power source.
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