Sensaphone Dry Contact Bridge IMS-4850 Use a Sensaphone Dry Contact Bridge to connect a dry contact alarm from any device to your IMS-4000 Host or Node. The Dry Contact Bridge is compatible with Normally Open and Normally Closed contacts. The sensor may be mounted either on a wall or rest on the floor. The Dry Contact Bridge connects to the IMS-4000 Host or Node via an RJ-45 cable e.g. CAT5 cable . Note FGD sensors, accessories, etc. are not compatible with IMS-4000 systems by Sensaphone. The connection from the sensor to the Host or Node can utilize your existing network wiring infrastructure. For example, the sensor may be installed in another room or another floor. Connect the bridge to your structured wiring network via an RJ-45 jack. At the other end, connect a patch cable from your structured wiring patch panel directly to the host or node environment input. This item ships from a separate warehouse and may require extra time for delivery.