Honeywell SD500-MIM Addressable Mini Input Module

The Honeywell SD500-MIM Addressable Mini Input Module is a compact, supervised input module designed for compatible Silent Knight IntelliKnight fire alarm control panels. It provides an addressable interface for normally open dry-contact initiating devices such as manual pull stations, waterflow switches, and other alarm contacts.

Its miniature construction allows the module to fit inside a single-gang electrical box, making it useful for installations where space is limited. Each SD500-MIM receives a unique SLC address so the fire alarm control panel can identify the specific monitored point during alarm or trouble conditions.

Addressable Contact Monitoring

The Honeywell SD500-MIM functions as a supervised single-input contact monitor. It uses an end-of-line resistor to supervise the connected circuit for alarm contact closures and open-circuit wiring faults.

When the connected initiating device activates, the module communicates the condition through the signaling line circuit to the compatible fire alarm control panel. If an open wiring fault occurs, the module can also report that condition to the panel.

Compact Miniature Design

One of the main advantages of the SD500-MIM is its small physical size. The module measures approximately 1.5 inches wide × 2.5 inches high × 0.7 inches deep and weighs approximately 1.6 oz. (45.4 g).

Its compact construction allows installation inside a single-gang box, including applications where the module is positioned near a manual pull station or other monitored dry-contact device.

Key Features

• Addressable single-input contact monitor
• Supports Class B (Style B) contact wiring
• Monitors normally open dry-contact devices
• Compact single-gang-box installation
• DIP-switch programmable SLC addressing
• Supervised alarm and wiring fault monitoring

Addressable SLC Operation

Each SD500-MIM is programmed with an individual signaling line circuit address. The module uses DIP switches for address selection, with valid addresses ranging from 1 through 127.

Individual addressing allows the compatible IntelliKnight control panel to identify the exact module associated with an alarm or trouble condition. This capability can simplify system monitoring, inspection, and troubleshooting.

Commercial Fire Alarm Applications

The Honeywell SD500-MIM can interface a variety of normally open dry-contact devices with an addressable fire alarm system. Common applications include manual pull stations, waterflow switches, and other alarm-initiating contacts.

Its compact size makes the module particularly useful for retrofit projects or installations where mounting space is limited.

Environmental Specifications

The SD500-MIM is designed for indoor fire alarm applications. The product documentation also identifies approvals including UL, CSFM, and FM approval for use with the 5820XL.

System Compatibility

The Honeywell SD500-MIM was developed for Silent Knight IntelliKnight fire alarm control panels using compatible SD-series devices. Honeywell currently identifies the SD500-MIM as a discontinued product. Therefore, technicians sourcing this module for an existing system should verify panel compatibility, SLC protocol, and system requirements before replacement.

Overall, the Honeywell SD500-MIM Addressable Mini Input Module provides compact and reliable monitoring of dry-contact initiating devices.

SD500-MIM Datasheet