SmartOne® Model AI is used to monitor conventional, unpowered, contact-type initiating devices through a Class-B, Style-B initiating device circuit.
The SmartOne® Addressable Contact Input Device (AI) is an intelligent field device with its own microprocessor, memory and electronics necessary to interface N.O. or N.C. unpowered contacts to the ARIES NETLink control units. All of the electronics are contained in a high-impact polymer case, creating a very small and durable device for installation. Two types of AI's are available: an AI/NC for interfacing to normally-closed devices and an AI/NO for interfacing to normally-open devices. The AI may be located up to 2,500 feet from the monitored device with #18 AWG wiring. An end-of-line-resistor is required for supervision of the wiring to the device.