Industrial Scientific's 1600 Controller is capable of monitoring up to 16 sensors of digital ModBus RTU channels of either iTrans™ or Digital Transmitters. Using the Industrial Scientific ModBus register set, the 1600 Controller will automatically recognize and configure channels based on the number of sensors attached to the unit; simplifying installation time and costs. A single on-board relay can be used to activate an external alarm device when alarm levels are reached. The 1600 Controller can be programmed to activate up to 16 external ModBus relay modules (available from third party sources). A secondary RS-232 interface is available to connect the controller to larger control systems, PLCs, or DCS systems.