Wiring checking apparatus is shown at family in batches

Not enough to prior art, the utility model discloses a wiring checking apparatus is shown at family in batches has further improved the improvement to overall structure, has especially further carriedout the optimal design to surveying connecting portion, and is more convenient when making its installation and dismantling. For realizing above mesh, the utility model discloses wiring checking apparatus is shown at family in batches comprises transmitter and receiver that the complete set was used, during wherein the receiver passes through live wire and zero line that the probe inserted air switch, the probe is including installing the contact pin in handheld portion, and the terminal connecting wire of contact pin connects through elastic expansion portion between handheld portion and thecontact pin, and the probe below is equipped with the fixed part. The utility model discloses a such technical scheme through the improvement to the probe, ensures through the locator card union piece that the probe need not