Some of these units also come with the option of a panic button or a fall sensor in case of emergency.

其中一些单位还提出选择一个恐慌按钮或跌落传感器，在紧急情况下。

youdao

Water temperature is given by the digital sensor DS18B20, the wanted temperature is set by the button, both temperature are shown by LED.

采用数字式温度传感器DS18B20测量水温，用按键设定所需温度，数码管显示实际温度与设定温度。

youdao

With their finger, the user rotates the sensor touch pad, located on the outer ring of the power button, to activate the heating function.

与他们使用者转动时手指碰垫、传感器，座落于外环线的电源按钮，要激活加热功能。

youdao

If the iPad isn't nearby or isn't connected via Bluetooth, up to 100 pages of writing can be stored on the sensor by pressing a small button on the sensor.

WSJ: Pen and Paper Find a Place in the Digital World

Most of these gizmos, like the hipKey and Proximo, work in reverse, too: Pressing a button on the sensor will make your smartphone ring even if the volume is turned down.

WSJ: Track Your Lost iPhone and Other Gear With These Gizmos

Packed with advanced imaging technology, the HTC TITAN II features a 16-megapixel camera with a wide-angle lens, autofocus, dual LED flash, red eye reduction, image stabilization, a backside-illuminated sensor and a physical camera button, offering a viable replacement for digital point-and-shoot cameras.

ENGADGET: HTC Titan II coming to AT&T, finally delivers LTE to Mango lovers