Features: brand new and high quality This hub uses industrial-grade super anti-interference chips and surge for protection and electrostatic for protection circuits Load capacity: each channel supports up to 128 devices;Support 152.2Kbps high baud rate Two-way communication, Plug and for play, no driver required,easy to use Good heat dissipation and stable performance Widely used in industrial systems, communication , transportation, education, finance, electricity, security, charging systems etc Specifications: Item: Industrial Isolated 1 to 8 RS485 HUB Model: TX1178 Terminal type: 2-position terminal block Size: approx 115x80x30mm/4.53x3.15x1.18in Transmission distance: 1200M Load capacity: each channel supports up to 128 devices Transmission medium: shielded wire or twisted pair Working environment: -20℃-80℃ Power supply: for DC 12-55V Package Includes: 1 PC x 1 to 8 RS485 HUB note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-3mm error due to manual measurment. Note: 1.Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 326 hours Hope you have a pleasant shopping experience!