Walfront Repeater Photoelectric Isolation Built?in DC/DC Isolated Power Supply Module Industrial Grade 4?Channel RS485 Hub Sharer Splitter 300bps-115.2Kbps

Specification: Item Type: Repeater Compatibility: Compatible with RS-232, RS-485TIA/EIA standards Working Voltage: DC: 9-24V Rated Power: 0.5-1.2W Input Interface: 1 RS-232/1 RS-485 Output Interface: 4 RS-485 Load Capacity: 128 nodes per interface Communication Distance: 2500 meters shielded wire or twisted pair wire per interface Communication Rate: 300bps-115.2Kbps Installation Method: 35mm rail installation, 4-hole installation on the back plate Structure Size: Approx. 115 x 90 x 40mm / 4.5 x 3.5 x 1.6in Working Environment: -30? to 70? Relative humidity>95%RH Wiring Notes: 1. 485 communication line must use shielded twisted pair, preferably multiple strands for spare, the longest is not more than 2500 meters. 2. The wiring should be as far away as possible from high-voltage wires, not parallel to power lines, and not to be bundled together. 3. 485 bus must be a hand-in-hand bus structure, and resolutely eliminate star connection and bifurcation connection. 4. If there are more than 30 controllers or the cable length is greater than 500 meters, it is recommended to use a 485 repeater. 5. The AC-powered equipment and the chassis must be grounded and well grounded. 6. Connect the GND ground of all 485 devices with shielded wires. Package List: 1 x Repeater Note: The device is suitable for long?term stable under the recommended value; the device will not be damaged when working under the limit value, but may cause performance degradation; do not exceed the limit value range at any time, otherwise it may cause damage to the device!