The sealey vs8813 is a 16-pin obd breakout box designed to test on-board diagnostics ports for faults before connecting diagnostic equipment to the vehicle's data link connector. This professional diagnostic tool allows automotive technicians and mechanics to verify the integrity of obdii eobdii connections, protecting expensive diagnostic equipment from potential damage caused by faulty vehicle circuits. Designed to be connected in series with 16-pin obdii eobdii diagnostic equipment, the breakout box is compatible with both 12v and 24v vehicle systems, making it suitable for cars, vans, and commercial vehicles. The unit can also interface with multimeters and oscilloscopes, providing comprehensive diagnostic capabilities for fault-finding and circuit testing. The selectable pin voltage indicator displays real-time voltage readings for individual pins with 0.1V resolution, allowing precise monitoring of diagnostic port signals. Communication protocol indicators cover all major automotive bus systems including can h pin 6 , can l pin 14 , vpw pwm pin 2 , pwm- pin 10 , k line pin 7 , and l line pin 15 . Built-in overload and reverse polarity protection safeguards both the breakout box and any connected diagnostic equipment from electrical damage during testing. Features and benefits: real-time voltage monitoring with selectable pin voltage indicator compatible with 12v and 24v vehicle systems for versatile applications overload and reverse polarity protection prevents equi...