Every motor vehicle inspection station must be equipped with a trailer connector tester. The tester is a microprocessor-controlled electronic device used to check the technical condition of the car’s (socket) or trailer’s (plug) electrical wiring.

TZ-1 Trailer Connector Tester technical specifications:

• power supply: AC 230V
• wiring voltage: 12/24V
• standard typical 12V connectors:
  - N/S socket/plug
  - "13" socket/plug
• optional typical 24V connectors:
  - N/S socket/plug
  - "15" socket/plug
  - ABS socket/plug