Features: 120Q resistor precise, power is calculated in accordances with TI's CAN chip communication, you can rest assure to use. CAN communication definition, to ensure the integrity of the communication The appearance of the product and the db9pin adapter is exactly the same: CAN matching resistor, electrical characteristics and genuine products without any difference. male/female connectors conversion optipnal, can be directly connection into the db9pin pin connectors at the back end of the bus analyze no need to change the existing wire line. db9pin on the screws can be removed, with screws is to detect the port fixed, if the communication test, or remove the screws more convenient! Specifications: Name: CAN bus db9pin adapter Model: male to female/male to male/female to female Resistance:120Ω Size: asbout 32x14x7mm/1.26x0.55x0.28in Package Includes: 2PCS CAN bus db9pin adapter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.