Four different monitor modules are available for Johnson Controls’ intelligent control panels for a variety of applications. Monitor modules supervise a circuit of dry-contact input devices, such as conventional heat detectors and pull stations, or monitor and power a circuit of two-wire smoke detectors. M300MJ(A) is a standard-sized module (typically mounted to a 4″ [10.16 cm] square box) that supervises either a Style D (Class A) or Style B (Class B) circuit of dry-contact input devices.

• Built-in type identification automatically identifies this device as a monitor module for the control panel.
• Powered directly by a two-wire SLC loop. No additional power is required.
• High noise (EMF/RFI) immunity.
• SEMS screws with clamping plates for ease of wiring.
• Direct-dial entry of address: 01 – 159 on FlashScan loops; 01 – 99 on CLIP loops.
• LED flashes green during normal operation (this is a programmable option) and latches on steady red to indicate alarm.