> For the complete documentation index, see [llms.txt](https://support.senterasensors.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.senterasensors.com/home/65r-sensor-user-guide/integration-information/i-o.md). # I/O

## J1 - Power In

Pin	Signal	Type	Description
1	VCC	PWR	10.5 - 26V Input 1A @ 12V Typical
2	VCC	PWR	10.5 - 26V Input 1A @ 12V Typical
3	GND	PWR	N/A
4	GND	PWR	N/A
5	SDA	I/O	I2C - Motor Controller IMU
6	SCL	I/O	I2C - Motor Controller IMU

## J2 - User I/O

Pin	Signal	Type	Description
1	UART2_TX	O	3.3V UART Output - Primary UART
2	UART2_RX	I	3.3V UART Input - Primary UART
3	UART3_TX	O	3.3V UART Output - Secondary UART
4	UART3_RX	I	3.3V UART Input - Secondary UART
5	PPS	I	3.3V Pulse Per Second Input - RTK
6	EVENT_OUT	O	3.3V Event Output - RTK
7	TRIGGER	I	3.3V Trigger
8	RSVD1	I/O	Reserved for future use
9	GND	PWR	N/A
10	GND	PWR	N/A

## J3 - Ethernet

Pin	Signal - 100BASE-T	Signal - 1000BASE-T	Description
1	TX+	BI_DA+	GRN/WHT
2	TX-	BI_DA-	GRN
3	RX+	BI_DB+	ORG/WHT
4	RX-	BI_DB-	ORG
5	N/A	BI_DC+	BLU/WHT
6	N/A	BI_DC-	BLU
7	N/A	BI_DD+	BRN/WHT
8	N/A	BI_DD-	BRN

## J4 - USB-C Used for data transfer to/from sensor. ## J5 - Power Input External Power input 10.5 - 26V Input 1A @ 12V Typical ## Micro-SD Card

User for recording diagnostic log file data. [^1]: