door-knob transformer

例句：

1. 1. The door-knob transformer is a device that can convert the rotational motion of a door handle into electrical signalsfor use in electronic locks.
   门把手转换器是一种可以将门把手的旋转运动转换为电信号的设备，用于电子锁中。
2. 2. The door-knob transformer was designed to simplify the process of turning a deadbolt without removing it from its housing.
   门把手转换器的设计是为了简化在不从其外壳上取下死锁的情况下转动旋钮的过程。
3. 3. The door-knob transformer has become increasingly popular among homeowners looking to upgrade their securitysystems without having to replace their entire door hardware.
   门把手转换器在寻求升级他们的安全系统而不必更换整个门硬件的房主中越来越受欢迎。