Key facts
- Manuals
- 1
- Languages
- ZH
- Last added
- 2012-01-05
Featured YF-504A manuals
Yudian YF-504A RS485 Signal Amplifier Manual
The YF-504A RS485 signal amplifier/distributor expands a single RS485 input to four isolated outputs, each capable of driving up to 128 terminals for a total of 512 nodes. It supports unidirectional transmission and can extend communication distance up to 1200 m, with ports designed for anti‑static and lightning protection.
Installation requires a DC9‑12 V, 500 mA power supply, proper A/B wiring, and a 120 Ω termination resistor at the far end of each loop (only one resistor per loop). The package includes the distributor, power adapter, manual, certification, and four 120 Ω resistors. This manual is written in Chinese.
Covers: Product Overview · Technical Specifications · Installation Instructions · Wiring Guidelines · Power Requirements · Accessories
Latest YF-504A manuals
Yudian YF-504A RS485 Signal Amplifier Manual
User Manual 1 pages · 222 KB · ZHThe manual provides installation, wiring and operation instructions for the YF-504A RS485 signal amplifier/distributor.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in YF-504A manuals
How many RS485 terminals can each output support?
Each RS485 output can connect up to 128 terminals, allowing a maximum of 4 × 128 = 512 nodes.
What power supply is required for the YF-504A?
The device requires a DC power supply of 9 to 12 V with a current rating of 500 mA.