Key Features:

• Remote Temperature Monitoring: Accurately measures environmental temperature from -50 °F to +140 °F (approx. -45 °C to +60 °C). Ideal for freeze alarms, greenhouses, attics, wine cellars, etc.
• Direct Zone Connection: Interfaces to any hardwired zone on the M1 main board (uses zone terminals and aux +12V/GND). The panel reads temperature value instead of a simple open/close, enabling analog monitoring
• Alarm & Automation Integration: Use M1 rules to trigger actions based on temperature – e.g., send alerts if temp goes out of safe range, or activate HVAC/ventilation devices via outputs
• Stackable Usage: Up to 16 M1ZTS sensors supported on one system (one per main board zone input), expanding the M1 into a multi-zone temperature monitoring system
• Indoor/Outdoor (Covered) Use: The sensor module is compact and can be placed in living spaces, equipment rooms, or protected outdoor areas. Its probe design avoids false alarms from floor condensation or humidity (sensing element is raised off mounting surface)

Technical Specifications:

• Measurement Range: –50 to +140 °F (–46 to +60 °C); accuracy within ±1 °F typical in central portion of range
  
• Sensor Type: Precision NTC thermistor, factory-calibrated. Internal probe on the M1ZTS board (optional external probe version M1ZTSR available separately for remote sensing)
  
• Zone Wiring: 3-wire connection (Zone input +, Zone –, +12V). EOL resistor required on zone (selectable 2.2KΩ or per panel programming) – the M1ZTS presents varying resistance proportional to temperature
  
• Size & Mounting: Small plastic module ~3.5″ × 2.5″ × 0.9″. Vent slots allow airflow to internal sensor. Mounts via screws or adhesive in the area to monitor (avoid direct sunlight or drafts for best results)
• Power Draw: ~10 mA at 12V DC (negligible impact on panel aux power capacity)