What do you mean by no pairing needed? Is ECPin not a Bluetooth device?
你说的"无需配对"是什么意思？ ECPin不是蓝牙设备吗？
ECPin is a Bluetooth Low Energy (BLE) device that allows your phone (after turn on Bluetooth) to scan for it and pair automatically.
ECPin是一种低功耗蓝牙（BLE）设备，允许您的手机（打开蓝牙后）自动扫描并配对。