Item Type: RS485 Hub Material: ABS Model: YN1216 Applicable Power Supply: DC924V Interface Characteristics: Compatible with EITIA RS-485 standard. Electrical Interface: RS-485 bolt type terminal. Interface Protection: RS-485 600W thunderstrike surge protection and overcurrent protection. Transmission Medium: Twisted pair or shielded twisted pair. Number of Nodes: Maximum 32 (128 can be customized), external connection as required. Transmission Rate: 1200bps to 187.5kbps (adaptive). Working Mode: Half-duplex transparent transmission. Isolation Performance: 1000V photoelectric isolation. Power Consumption: 1.5W at DC9~24V. Maximum Transmission Distance: Approx. 1200m (4000ft) at 9.6kbps. Status Prompt: Real-time display of the on-board transceiver indicator. Working Temperature: -20 - 65 Operating Humidity: 25%-85% (non-condensing).1The maximum node number of this RS485 hub is 32, enables two?way communication with wide voltage as well. 2Has a adaptive transmission speed from 1200bps to 187. 5kbps, which ensures stable and efficient transmission. 3Enables a maximum transmission distance up to 1200 metres at 9. 6kps, the transmission is reliable and efficient. 4Both master and slave ports have optical isolation, and the ports also have surge protection for safe working. 5Can be used in various places, such as industrial automation, power collection system, engineering project, etc. 1 x RS485 Hub 1 x User Manual