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Alert System Type
Smoke / Fire / Carbon Monoxide
Sensor Type
Smoke / Heat
Radio Frequency (RF)
RF Transmission
Audible Indicator
Battery Operated
LED Feedback
Visual Indicator
315 MHz
Ease of Installation
Beginner (Installs < 10 minutes)
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Fully Supervised Wireless Photoelectric Smoke Detector
Visonic MCT-426 Supervised Smoke Detector
Visonic MCT-426 Supervised Smoke Detector
Visonic MCT-426 Supervised Smoke Detector
Item# 73999
Customers rated this product 3.5 Stars
2 customer ratings
Price: Normally $108.00 
Hot Deal $63.47
Free shipping on orders over $175 - See Details


  • Long battery life - 5 to 8 years typical
  • Loud 85 dB alarm
  • Tamper switch
  • Audio and visual indicators advise when to clean the sensor
  • Sound and transmitted alerts for smoke, fire, low battery

Essential Info

The MCT-426 is a fully supervised wireless photoelectric smoke detector compatible with PowerMax and other Visonic PowerCode wireless systems. Achieving superior smoke detection sensitivity levels, the MCT-426 provides early warning of developing fire. When smoke is detected, it issues both sound and transmitted alarms and communicates it to connected systems. To ensure secure communication, transmissions use a PowerCode 24-bit ID command code, which is selected from 16 million possible combinations and is therefore unique and virtually impossible to accidentally reproduce. A smart anti-collision algorithm prevents signal jamming by simultaneous transmissions from multiple devices. Operates on one CR123A Lithium Battery for 5 years (typical).


What's Included

  • 1x - Supervised Smoke Detector
  • 1x - Mounting Bracket
  • 1x - CR123A Battery
  • 1x - Instruction Manual

  • Specifications

    Manufacturer Product No.MCT-426
    Alarm Sound Level85 dB at 10' (3m)
    Operating Frequency315 MHz
    Transmitter ID Code24-bit digital word
    16 million combinations
    Overall Message Length36 bits
    SupervisionAutomatic signaling at 60-minute intervals
    Tamper AlertsTamper event reported once
    Tamper restore reported once
    Transmission IndicatorYellow LED
    Alarm ReportEvery 20 sec for first 3 min
    Every 3 min until 30 min
    Alarm stops at 30 min or if it enters "alarm restore"
    After 30 min, an alarm bit is sent per supervision package
    Power Requirement1x CR123A or CR17450 battery
    Operating Voltage2.7 to 3 VDC
    Power Consumption18 µA standby, 70 mA operating
    Smoke Density1.44%/ft to 2.74%/ft
    Coverage1770-3530 cu ft (50-100 cu m)
    Battery SupervisionAuto transmits battery status
    Battery LifeMinimum 5 years
    Audible/Visual Low Battery WarningBeep every 30 sec and simultaneous flashing red LED
    Audible/Visual Sensor WarningBeep every 30 sec alternating with flashing red LED
    Clean Warning TransmissionTransmits when sensor becomes stained (on PowerMax+ only)
    ApprovalsFCC, CE, UL 268
    Weight5.8oz (165g)
    Operating Temperature14° to 122°F (-10° to 50°C)
    Operating Humidity10% to 85%
    Dimensions4.7" dia x 2.3" (120 dia x 58 mm)
    Mfgr Warranty1 year, limited
    5 years for battery
    Important notes:
    Defective exchanges for identical item within Manufacturer’s warranty period.
    Manufacturer contact information: Visonic Inc, Tel: (860) 243-0833


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