P3
2
Pin and buttons
Switch
Instructions
PWR
ON
Power on
OFF
Power off
Pin
Name
Instructions
4
VDC
+10 ~ +30 VDC
3
GND
Ground
2
CT
Split-core CT pin
，
no
directionality
，
support
measuring and charging
function
1
CT
Extension bus
Instructions
Ext_Bus
Empty or connect
extension module
Button
Instructions
Wake
Manual wake up
F3
Reserved
