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Specification
Brand : Keenso
BulletPoint1 : [Enhanced Transmission Performance] With a stable transmission rate of up to 115.2Kbps, this Industrial Grade Photoelectric Isolation RS485 Hub ensures reliable and efficient communication.
BulletPoint2 : [Complete Communication Isolation] Featuring a built-in DC/DC isolated power supply module, this 4-Channel Repeater achieves electrical isolation between ports for enhanced data security.
BulletPoint3 : [Expanded Communication Capacity] Connect up to 128 nodes per channel, allowing for multi-machine communication. Enjoy a maximum transmission distance of 2500 meters, making it ideal for large-scale installations.
BulletPoint4 : [User-Friendly Data Control] Utilizing advanced data automatic control technology, this splitter automatically distinguishes and controls the data transmission direction for seamless operation.
BulletPoint5 : [Robust Protection Measures] Equipped with plus or minus 15KV ESD protection and 600W dual-channel TVS protection, this RS485 Hub offers reliable protection against voltage spikes and communication interferenc
Color : Black
CompatibleDevices : Projector
ConnectorGender : F Type RG6 Male to 2 Female Cable Splitter
ConnectorType : usb
ExternallyAssignedProductIdentifier : 7622681284116
IncludedComponents : no
ItemDisplayDimensions_Length : 7.87 inches
ItemName : Keenso Reliable 4-Way RS485 Hub Sharer Splitter with Industrial Grade Photoelectric Isolation - Ensures Stable Transmission
ItemPackageDimensions_Height : 5 centimeters
ItemPackageDimensions_Length : 15 centimeters
ItemPackageDimensions_Width : 15 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : electronics-signal-splitters
Manufacturer : Keenso
Material : ABS, PVC, Copper
ModelName : Optical
ModelNumber : 3JEN3RV905MZ00282O3ZUQC
NumberOfBoxes : 1
NumberOfItems : 1
PartNumber : Yonodrixer
ProductDescription : 1. Industrial‑grade design, complete communication isolation, Durability-Optimized and transmission 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 transmission distance is 2500 meters.
4. Data automatic control technology, automatically distinguish and control the data transmission direction.
5. Multiple protection measures, plus or minus 15KV ESD protection, 600W dual‑channel TVS protection 2.5KV communication isolation.
6. The power supply has a wide range of 9-24VDC and has anti-reverse protection.

Specification:
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 resistance 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)
Signal Common Ground:
1. All devices on the same network segment must have a unified signal 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 signal ground.
At this time, the signal 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 signal ground.

PackageList:
1 x Repeater

Notice:
The device is suitable for long‑term stable operation 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 : 2025-06-06T13:45:32.546Z
Size : 20.00X4.50X1.50CM
Style : Modern
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
UnspscCode : 43222600
WarrantyDescription : manufacturer warranty for 90 day