Abstract: An adjustable measurement device includes a case, a positive contact portion, a negative contact portion, a test probe, a first wire, and a second wire. The positive contact portion is positioned on an end of the case and electrically connected to the first wire. The negative contact portion is movably received in the case and electrically connected to the second wire. A receiving hole is defined in the negative contact portion for the test probe. The test probe includes a main body electrically connected to the negative contact portion, a tip portion electrically connected to the positive contact portion, and an insulating portion positioned between the main body and the tip portion. A distance between the positive contact portion and the negative contact portion is adjustable by moving the negative contact portion. The negative contact portion and the positive contact portion are isolated from each other.

Abstract: A solid capacitor includes a body, a strip-shaped positive connection terminal and a strip-shaped negative connection terminal extending from the body comprising. Length directions of the positive connection terminal and the negative connection terminal are substantially parallel with each other while width directions of the positive connection terminal and the negative connection terminal are substantially perpendicular to each other.

Abstract: An adjustable measurement device includes a case, a positive contact portion, a negative contact portion, a test probe, a first wire, and a second wire. The positive contact portion is positioned on an end of the case and electrically connected to the first wire. The negative contact portion is movably received in the case and electrically connected to the second wire. A receiving hole is defined in the negative contact portion for the test probe. The test probe includes a main body electrically connected to the negative contact portion, a tip portion electrically connected to the positive contact portion, and an insulating portion positioned between the main body and the tip portion. A distance between the positive contact portion and the negative contact portion is adjustable by moving the negative contact portion. The negative contact portion and the positive contact portion are isolated from each other.

Abstract: A detection device includes a first rod including a first contact pad, a second rod including a second contact pad, an adjusting rod fixed to the first rod, and a threaded rod fixed to the second rod, the threaded rod being screwed on the adjusting rod. The adjusting rod screws relative to the threaded rod, which causes the distance between the first contact pad and the second contact pad to be adjusted.

Abstract: A cloud server of a data center being used to control electronic devices. The cloud server receives employee information from a client in electronic communication with the cloud server a first time. The cloud server notifies a power supply to power on electronic devices corresponding to an employee, in response to a determination that employee information matches identification information of the employee. The cloud server notifies the power supply to turn off the electronic devices corresponding to the employee when the cloud server receives the employee information from the client a second time.