Air Conditioner with Motion Sensors on Shabbat
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Question
Hello, In a place such as a hotel abroad, where there is an air conditioner with sensors (motion sensors) that cause the air conditioner to turn on and off when entering and leaving the room, how is it permissible to use this room on Shabbat?
Answer
Hello,
You need to cover the sensors. If this is not possible, you should turn off the sensors at the main control computer or at the control center of the air conditioning systems.
Source
Chazon Ish Orach Chaim, Siman 50
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