Loosing automatic sensor switch, pressing up or down to adjust test height, then tighten it.

拧松自动感应开关，按上下移动来调节测试高度，然后拧紧。

youdao

Reed switch; Proximity sensor; Float Sensor; E-bike Brake Switch; Reed Relay; Flow Switch; Tilt Sensor Switch; Vibration Sensor Switch; Centrifugal Force Sensor Switch.

干簧管； 接近开关； 浮球开关； 电动车刹车开关； 干簧继电器； 水流开关； 角度开关； 震动开关； 离心力开关。

youdao

When he flicks the switch and turns on his lamp, a sensor on his desk downloads music tracks digitally encoded within tiny flickers in the lamp's light.

当他轻按开关打开他的台灯时，灯光在细微闪烁中通过他桌上的传感器，并使传感器下载数字编码的音乐歌曲，然后音乐从附近的一对扬声器里传出来。

youdao

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

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)