Integrated Hall switch sensor is one kind of magnetism-sensing switch based on Hall effect.

集成开关型霍耳传感器是一种基于霍耳效应的磁敏开关。

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Bipolar Hall Switch Sensor magnet polarity is no need to distinguish, with great flexibility and convenience.

双极性开关型霍尔传感器则无须判别磁体极性，具有很大的灵活性和方便性。

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Introduced a type complex press-switch sensor. The sensor can setup many switch value, provide upper-limit, lower-limit and security alarm.

介绍一种复合式压力开关传感器，可设置多路开关量限，提供系统上、下限和超限报警。

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We saw a number of Electric Imp demos and appliance ideas at the booth including a simple hand-held "detonator" toggle switch with LED, seven-segment counter, water level sensor, servo-controlled gauge, RGB light, power socket, Christmas light, power monitor, toy washing machine, 16x16 LED display and receipt printer (the latter two being combined to show the avatars and tweets of anyone mentioning the Electric Imp) -- all Internet aware.

ENGADGET: Hands-on with the Electric Imp at Maker Faire (video)

Rather than using a passcode or swipe pattern to unlock the phone's screen, the new handset's fingerprint sensor allows users to simply press and slide a finger across a switch to quickly unlock it.

ENGADGET: blogger-avatar