想問依舊黑色嘅嘢喺乜嚟架見佢設喺停車場閘bar度，見佢閘bar兩面都有。(煩請告知）?
回答 (2)
2020-12-30 12:18 pm
✔ 最佳答案
上答對了。但人家用中文問，回答英文看不懂吧?
紅外線感應器：若有物件在車道上(例如車子未駛離)便不會"落閘"。
2020-12-30 3:24 am
They are infrared sensors.
The purpose of the sensors is to detect if there is any obstacle in between, so that the gate will not close and cause damages.
The purpose of the sensors is to detect if there is any obstacle in between, so that the gate will not close and cause damages.
收錄日期: 2021-04-11 23:22:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20201229141742AAP07cs