Check the listing for details. Construct Pro 1x6 Telephone Module with RJ31 Jack (Black). Condition: New. Listed at 29.99 USD. Construct Pro 1x6 Telephone Module with RJ31 Jack (Black) Model CON9004 1 x 6 Telephone Module enables you to add up to 4 lines to 6 locations. May be combined with another CON9004 or a CON9003 to add additional lines. Features RJ-31X Jack for easy integration for security systems. Designed to fit most structured wiring enclosures. In the event your installation requires slight modifications, custom compatibility pins are included. Use these pins when you need to match the mounting pattern of other enclosures and/or equipment. If six outputs are not enough you can quickly add an extra telephone module with an extension jack and a network cable. Key Features 1 x 6 Telephone Module – Enables you to add up to (4) lines to (6) locationsFeatures RJ-31X Jack for easy integration for security systemsNote: Do not plug any other device into the RJ31X jackNot necessary to remove RJ31X jack if the fire alarm/security equipment has been uninstalledInputs: 1 | Outputs: 6Designed to fit most structured wiring enclosuresMountable on wall or wire canMay be combined with another CON9004 or CON9003 to add additional lines if neededCustom compatible pins are included for slight installation modificationsColor-Coded Terminals