Check the listing for details. Output Branch Controller for 2 Wire Video Intercom System ??? DT-DBC4A1, 4-Way D. Color: N/A, Condition: New. Listed at 57.23 USD. 4 Way DistributorIt allows you to connect up to 4 intercoms or door phones to one system (door stations and monitors cannot be connected at the same time). It does not need external power.Cannot be used to branch into separate monitor branches that have additional hubs of their own.Features:Signal amplifierBranch module for home-run Monitor Stations or Entry PanelsFor door stations(max.4) or monitors(max.4)Automatically matching for all DT devicesStar topology for multi-door stations or monitorsSeparate isolation protection without affecting another device on the bus systemShort-circuit indication for convenient maintenanceThe periodic self-detection mechanism for recoverySpecifications:Two InputsFour OutputsLED status indicatorsLine termination switchWiring: 2 wires (non-polarity)Mounting: on DIN rail or screwsWorking Temperature: -10°C~+40°CDimension: 89(H)×71(W)×45(D)mmHousing Material: ABS PlasticColor: WhitePackage Includes:1 x Four Branch Distributor (DT-DBC4A1) SKU: 5023-N-CM Return Policy Returns will not be accepted without a Return Merchandise Authorization Number (RMA). Refused Delivery: It will be subject to a 20% restocking fee. The customer will also be responsible for the return shipping cost incurred by the action of refusing the delivery. Consequently, amount of refund will be issued less 20% restocking fee of the value of the merchandise and less shipping and handling fees both ways. All shipping and handling fees are non-refundable with an exception where we have made an error by shipping and incorrect item to the customer.