Features: 1.5V Power Supply: TTL turn to RS485 module is powered by 5V, and TTL transceiver interface is compatible with 3.3V and 5.0V levels. 2.Industrial Design: TTL turn to RS485 module adopts industrial design, with stable and reliable performance, and the highest signal transmission rate is 500Kbps. 3.Multiple Protection: RS485 module has multiple protection measures, plus or minus 15KV ESD protection, 600W dual TVS protection, and 10 current protection resistor. 4.Multi Machine Communication: TTL turn to RS485 module supports multi machine communication, and a maximum of 128 devices can be connected to the bus. 5.Superior Performance: TTL turn RS485 module supports hot plug, with strong driving ability, and the longest transmission distance is 1200m/ 3937.0ft. 6.Strong Signal: TTL turn RS485 module adopts all single sided wiring to ensure signal quality and improve signal integrity. Meanwhile, copper is laid in a large area to prevent TTL Turn to RS485 Module signal interference. 7.Easy Installation: TTL to RS485 module has wiring terminal and welding lead hole, which is convenient for users e; With 3 mm/ 0.12 inch screw holes, easy to install. specification:Item Type: RS485 Module Material: PCB Model: RS485 Operating Voltage: 5.0V (Should Not Exceed +/-5% of the Nominal Voltage) Operating Current: Static 3mA Operating Temperature: Recommended-30-70 (Limit Range-40-80) Capacity: Up to 128 Devices on the Bus Flow Direction Control: Automatic Flow Direction Control Communication Rate: No Higher Than 500K, Automatic Adaptation PackageList:1 xRS485Module