A True Wireless System (TWS)headphone is provided, which comprises a charging case and one or two earbuds. The earbuds may be attached into the charging case by a two pogo pin connector. The earbuds can detect the different status of the battery in the charging case via the two pogo pin connector and can auto power on or off accordingly when taken out or put into the charging case.

A lightbulb socket adapter for a hand-held non-contact voltage tester is disclosed. The adaptor having a first engagement feature configured to at least partially couple with a hand-held non-contact voltage tester and a second engagement feature configured to be at least partially disposed within a lightbulb socket. A first embodiment has an adaptor with a male Edison screw, and a second embodiment has an adaptor with protrusions on elastically deformable limbs configured to snap down into a female Edison screw and unscrew out.

A lightbulb socket adapter for a hand-held non-contact voltage tester is disclosed. The adaptor having a first engagement feature configured to at least partially couple with a hand-held non-contact voltage tester and a second engagement feature configured to be at least partially disposed within a lightbulb socket. A first embodiment has an adaptor with a male Edison screw, and a second embodiment has an adaptor with protrusions on elastically deformable limbs configured to snap down into a female Edison screw and unscrew out.

A system for the verification of the absence of voltage has a first series of resistors and a first voltage limiter connected between a power line and a first voltage sensor and such as to limit a sensed voltage to a set amount above a threshold set by a standard and a first series of LC resonance filters connected between the power line and a RF signal generator. The system also has a second series of resistors and a second voltage limiter connected between the power line and a second voltage sensor and a second series of LC resonance filters connected between the power line and an RF signal detector. The system is configured to detect continuity to the voltage line by sending an RF signal generated by the RF signal generator through the first lead line and detecting it at the RF signal detector via the second lead line.

A system for the verification of the absence of voltage has a first series of resistors and a first voltage limiter connected between a power line and a first voltage sensor and such as to limit a sensed voltage to a set amount above a threshold set by a standard and a first series of LC resonance filters connected between the power line and a RF signal generator. The system also has a second series of resistors and a second voltage limiter connected between the power line and a second voltage sensor and a second series of LC resonance filters connected between the power line and an RF signal detector. The system is configured to detect continuity to the voltage line by sending an RF signal generated by the RF signal generator through the first lead line and detecting it at the RF signal detector via the second lead line.

Provided are a live detection method and apparatus for a high-voltage switch cabinet. The live detection apparatus for a high-voltage switch cabinet includes a robot body and a back-end server. The robot body includes a host module, a power module, a detection module and a motion module. The power module is electrically connected to the host module and the motion module. The host module is communicably connected to the motion module and the detection module. The detection module includes a visible light camera, an infrared thermal imager, an non-contacting ultrasonic sensor and an ultrahigh-frequency sensor. The motion module includes a horizontal motion module, a vertical motion module and a rotating motion module. The horizontal motion module includes a motor-driven carrier and a laser navigation system. The vertical motion module is secured to the motor-driven carrier.

Provided are a live detection method and apparatus for a high-voltage switch cabinet. The live detection apparatus for a high-voltage switch cabinet includes a robot body and a back-end server. The robot body includes a host module, a power module, a detection module and a motion module. The power module is electrically connected to the host module and the motion module. The host module is communicably connected to the motion module and the detection module. The detection module includes a visible light camera, an infrared thermal imager, an non-contacting ultrasonic sensor and an ultrahigh-frequency sensor. The motion module includes a horizontal motion module, a vertical motion module and a rotating motion module. The horizontal motion module includes a motor-driven carrier and a laser navigation system. The vertical motion module is secured to the motor-driven carrier.

A staple gun and a method of using the same. A stapling mechanism in the housing is activated to deliver a staple through an aperture in a housing wall and drive the staple into a surface around a stack of one or more electric cables. The gun includes a reciprocating cable guide for centering the gun on the stack of cables and closing a safety switch to permit the gun's trigger to be activated. A spacer extending outwardly from the housing wall rests on the upper surface of the cable stack. The spacer and a bumper that engages a hammer of the stapling mechanism provide for automatic depth adjustment when driving the staple into the surface. A reciprocating cable guard extending outwardly from the housing wall is positioned between the stack of cables and the staple to aid in preventing the staple from piercing the cable.

A dead front connector including a housing, an electrical coupling configured to electrically connect a power cable to a device, and an indicator located on the housing. The dead front connector further including a voltage testing circuit configured to test a voltage between the power cable and the device and illuminate the indicator when the voltage is above a predetermined threshold.

A dead front connector including a housing, an electrical coupling configured to electrically connect a power cable to a device, and an indicator located on the housing. The dead front connector further including a voltage testing circuit configured to test a voltage between the power cable and the device and illuminate the indicator when the voltage is above a predetermined threshold.