M300MJ JOHNSON CONTROLS

Product Overview

The M300MJ Monitor Module is designed for intelligent two-wire systems, allowing each module to be individually addressed using built-in rotary switches. It provides a fault-tolerant initiating device circuit (IDC) that can be configured as 2-wire or 4-wire for normally open fire alarm and supervisory devices, or normally open/closed security devices. The module features a panel-controlled LED indicator and can serve as a direct replacement for the M500MJ in existing systems.

Key Features

• Individual addressable via built-in rotary switches

• Configurable 2-wire or 4-wire fault-tolerant IDC

• Supports normally open fire alarm and supervisory devices

• Supports normally open or normally closed security devices

• Panel-controlled LED indicator for status monitoring

• Compatible replacement for M500MJ modules