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Specification
Brand : RIZGHWOY
BulletPoint1 : [COMPLETE ISOLATION] Experience complete communication isolation with this repeater. It features built-in DC/DC isolated power supply module to achieve electrical isolation between ports.
BulletPoint2 : [HIGH-PERFORMANCE REPEATER] Enhance your communication system with this industrial-grade photoelectric isolation repeater. It ensures Durability-Optimized（耐用性优化） and supports a rate up to 115.2Kbps.
BulletPoint3 : [AUTOMATIC DATA CONTROL] The repeater features data automatic control technology, which automatically distinguishes and controls the data direction.
BulletPoint4 : [MULTI-MACHINE COMMUNICATION] Connect up to 128 nodes per channel and achieve a distance of up to 2500 meters. for large-scale communication setups.
BulletPoint5 : [ADVANCED MEASURES] This repeater offers multiple measures including 15KV ESD and 600W -channel TVS , ensuring the safety of your communication system.
ConnectorType : USB
IncludedComponents : No
ItemName : High Performance Industrial Grade Photoelectric Isolation Repeater for RS485 Hub Sharing - Stable Up to 115.2Kbps - Supports 128 Nodes, 2500m Distance
ItemPackageDimensions_Height : 5 centimeters
ItemPackageDimensions_Length : 15 centimeters
ItemPackageDimensions_Width : 15 centimeters
ItemTypeKeyword : network-repeaters
Manufacturer : RIZGHWOY
ModelName : RIZGHWOYkph2r7qtbu
ModelNumber : RIZGHWOYkph2r7qtbu
NumberOfBoxes : 1
NumberOfItems : 1
ProductDescription : 1. Industrial‑grade design, complete communication isolation, Durability-Optimized（耐用性优化） and rate up to 115.2Kbps.
2. Built‑in DC/DC isolated power supply module to achieve electrical isolation between ports.
3. Support multi‑machine communication, each channel can connect up to 128 nodes, and the longest distance is 2500 meters.
4. Data automatic control technology, automatically distinguish and control the data direction.
5. Multiple measures, plus or minus 15KV ESD , 600W ‑channel TVS 2.5KV communication isolation.
6. The power supply has a wide range of 9-24VDC and has anti-reverse .

Spec:
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.
Requirements For Wire Selection Using RS-485 Bus For Communication:
Use 2-core shielded twisted pair cable
Copper, wire diameter 0.5～0.75 square millimeter,
Impedance 38～88Ω/km,
Capacitive 30～50nF/km,
2-core shielded twisted-pair cable with a twisting distance of 20 mm (if the line distance is not more than 500 meters, the line standard can be appropriately reduced, but it must be a twisted pair)
Common Ground:
1. All devices on the same network segment must have a unified ground to avoid common mode interference.
2. For centralized power supply, directly connect the DC negative poles of all power supplies on the same network segment (including the self-contained power supplies of communication equipment) to form a common ground.
At this time, the ground is the DC power ground.
3. When a single home supplies power independently, connect the ground (black wire) pins of all bus devices on the same network segment together to form a common ground.

packing list:
1 x Repeater

Notice:
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!
ProductSiteLaunchDate : 2025-04-15T05:04:32.903Z
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
UnspscCode : 43222600
WarrantyDescription : Manufacturer warranty for 90 day