Features OTDR Launch Cable is mainly used to make up the dead zone of OTDR test. Easy to Carry: There are no fusion joints in the center of optical fiber, small size, light weight and easy to carry. It can be carried and used with small space. Low loss: The loss is less than or equal to 0.5dbm/km. Low loss and strong practicability. This box can hold 2000 meters of optical fiber. Sealing performance: The OTDR launch cable box has excellent sealing properties, waterproof and anti-fouling. Compact and durable package, easy to use on site, can prevent fiber damage and ensure accurate results. Plastic Box: The OTDR launch cable come with a plastic box to easily store the OTDR launch cable, which can conveniently store the OTDR transmitting cable. It can realize front sealing, has locking function and is easy to open. It has excellent sealing performance. Specification: Item Type: OTDR Launch Cable Box Single Mode (SM) 9/125 Length: 1km Loss: ≤0.5dBm/km Package List: 1 x OTDR Extension Cable 1km 1 x OTDR Graph Text Report Package List 1 x OTDR Extension Cable 1km 1 x OTDR Graph Text Report