M21 Millennium II Single Channel Transmitter


The M21 single channel universal transmitter has been engineered from the ground-up to include the innovative features that managers and operators in the field demand, while providing rock solid day-to-day operation, even in the most extreme conditions. The Millennium II redefines what you expect from a fixed gas detection solution.

Sensors can be easily exchanged, with NE-MOS Solid StateElectrochemicalInfrared andCatalytic Bead sensor technologies available. The Millennium II transmitter automatically recognizes any connected pre-calibrated sensor and maintains an uninterrupted digital signal between them, providing fast response times and over 2000ft (600m) sensor separation.

The intuitive menu interface and non-intrusive commands in Class1 Div1 areas are accessed via the included external magnet and ultra-bright OLED graphic display. This OLED display is completely unique in the market, providing read-outs that are clearly visible in darkness or bright sun, blistering heat or at temperatures as low as -55°C! The transmitter maintains Class1 Div 2 safety levels with the face removed to access the push button controls and test jack outlets. Add our optional intrinsically safe HART® port adaptor for access to the built-in data logging and advanced diagnostics, right at the transmitter via a hand-held communicator or a THUM™ adaptor for instant wireless communications.

All this amounts to a detection solution which stands alone in it’s performance, versatility, and efficiency. Only Net Safety offers our unique blend of technologies which result in more uptime, less consumption, and greater safety coverage.

SMART Sensor Technology

A truly universal transmitter, the M21 can be fitted with a full range of both toxic or combustible gas sensors. SMART (Self Monitoring Analysis and Reporting Technology) sensors are pre-calibrated and easily connect to the transmitter which automatically recognizes a newly fitted sensor and uploads it’s specific configuration profile.

Lowest Power Possible – Widest Input Power Range

Allows for longer sensor separation (+2000ft.) using lighter gauge cabling which means lower installation costs and increased system stablility. Serious conditions can occur during common voltage drops when other detectors will simply stop functioning or shutdown operations by going into fault. The industry’s lowest power draw makes is also ideal for solar, TEG, and turbine powered applications.

Digital Communications to Sensors

Sensor and transmitter continuously communicate digitally, giving you the confidence of stable, accurate protection with fast response times even over long separation distances (2000ft/600m).

Global Certifications

The entire Millennium II Series is approved to international hazardous area safety standards for operation and performance.

P/N: M21-XX-X
Power Consumption: 2.4W @ 24 or 12 Vdc (average – varies by sensor types/quantities)
Voltage Range: 10.5 – 32.0 Vdc (HART: 18 – 32 Vdc)
EMC Compliance: EN 50270:2006 per EMC directive 2004/108/EC
Display: Organic LED (OLED), Power/Status LED’s
Temperature: -55°C to +85°C (-67°F to +185°F) Certified Operating Range
Relative Humidity: 0-99% RH non condensing
Enclosure Metallurgy: Aluminum or 316 SS
Enclosure Conduit Opening: 3/4” NPT (3X)
Outputs Standard: Analog 4-20mA
Outputs Optional: Four 5 Amp Form C Relays, RS 485 Modbus RTU, and HART
Sensors: Combustible Gases: SC3 Series Infrared and Catalytic Bead; Toxic Gases: ST3 Series Electrochemical and NE-MOS
Warranty: 3 years
Mounting: Surface Mount / Pipe Mount / Duct Mount
Weight: Aluminum: 2.4 kg (5.3 lbs), Stainless Steel (316SS): 2.6 kg (5.5 lbs)



Price: $100.00