传感器

chuán gǎn qì xìn hào

传感器信号

sensor signal

jī guāng chuán gǎn qì

激光传感器

laser sensor

dài hóng wài xiàn chuán gǎn qì de bǎo ān dēng

带红外线传感器的保安灯

security lights with an infrared sensor