XT60 Female to XT30 Male Connector 13mm Knob It's a 4 Pin JST

It's a 4 Pin JST Cable Connector Female - 2

IN-100 Ultrasonic Sensor Module Type Ultrasonic Sensor  Integrated IC CS100A Working Voltage 3V-5

Easy to Install: Standard 2-pin design

refer to a communication protocol

XT60 Female to XT30 Male Connector 13mm Knob It's a 4 Pin JSTThe XT60 Female to XT30 Male connector is a reliable power adapter designed to interface high current XT60 battery sources with XT30 based devices. Built with gold plated contacts and high temperature nylon housing, it ensures low resistance, secure connection, and stable power delivery in RC, drone, and DIY electronics applications. Features XT60 female input to XT30 male output configuration Gold plated contacts for low resistance and minimal power