Usage Tips:The extender does not distinguish between receiving and sending, The wiring is correct,Both sides need power supply, 9-24v,Adaptive wg26-wg80 format, Signal delay in 50-150ms Model Number:WG-RS485 Instructions:Please pay attention to the following points when using the extender:1. The card reader must be connected to the transmitter, that is, the GND of both should be connected 2. The access control board must be connected to the receiving converter, that is, the GND of both should be connected 3. 5 or 6 type network cable can be used as the signal transmission line the reader can be powered separately from the access control board 100 meters or more 4. If the access control board is powered, it is best to supply the remaining pairs of cable in parallel, leaving only one pair of lines for transmitting 485 signals: 5. If you can't receive the signal, please open the converter cover and observe the change of the indicator light: working status: red light is on the sending end: the blue light is on the receiving end: receiving the signal green light is on 6. Converter 485 terminal GND can not be connected under normal circumstances, only connect AB two lines, such as using shielded transmission line can be connected to the shielding layer 7. The extender needs to be used in pairs to function properly. The user should decode the card number when using it alone. Colour:As Shown Material:plastic Package Contents: 1Set x Wiegand Extender(Due to different product batches, the appearance , which does not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.