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Sensor Type
Motion / PIR / Occupancy
Pet Immune
Contact Closure / Relay
Radio Frequency (RF)
Ease of Installation
Intermediate (Installs < 60 minutes)
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Wireless Mirror PIR Detector Prevents Hard-to-Detect Security Threats and Intrusions
Visonic TOWER-40-MCW Wireless PowerCode Digital Mirror PIR Detector
Visonic TOWER-40-MCW Wireless PowerCode Digital Mirror PIR Detector
Visonic TOWER-40-MCW Wireless PowerCode Digital Mirror PIR Detector
Item# 73979
Price: Normally $79.99 
Hot Deal $79.12
Free shipping on orders over $50 - See Details


  • Elegant yet robust design - ideal for commercial applications and large residences
  • V-Slot technology provides high resistance to environmental interference and vandalism
  • Advanced True Motion Recognition for ultimate false alarm immunity based on patented algorithm
  • Market-leading mirror optics offer exceptionally high detection sensitivity
  • Extended range and coverage area - 60 x 82 feet / 90°
  • Multiple curtain coverage with true "creep zone" down-looking optics
  • Easy to install, with no vertical adjustments

Essential Info

The TOWER-40 MCW is a premium wireless intrusion detector designed to prevent hard-to-detect security threats and intrusions. With its robust yet elegant and stylish design, and extended range and coverage area, it is ideal for both large residences and commercial installations such as offices and shops. The TOWER-40 MCW detector is based on Visonic's innovative V-Slot mirror technology, which is extremely strong and provides high resistance to environmental interference, mechanical damage, and vandalism. With its market-leading optics, this detector also provides extremely high white light immunity, eliminating false alarms from direct sunlight, car headlights, and other strong light sources.

This winning combination of patented technologies is further complemented by additional features, such as multiple curtain coverage with true "creep zone" down-looking optics, a back tamper, and an isolated battery compartment for easy battery replacement. All this, together with its easy installation process, make the TOWER-40 MCW a best-of-breed intrusion detector that offers unparalleled detection sensitivity and higher immunity to false alarms than almost any other wireless detector on the market.



Manufacturer Product NoTower40-MCW
Detector TypeDual element lownoise pyroelectric sensor
Dimensions4 13/16" H x 2 1/2" W x 1 11/16" D
Weight4 Ounces
Mirror Data
No. of Beam Elements18x3=54 far parabolic mirror segments
No. of Curtain elements18
Maximum Coverage18 m (59 ft) / 90°
White Light ImmunityAbove 20000 lux
Internal Battery3V Lithium battery, type CR-123A
Nominal Battery Capacity1400 mA/h
Battery LifeTypically over 3 years
Battery Power TestPerformed immediately upon battery insertion
Frequency (MHz)315Mhz
Transmission Sequence3 data bursts at variable / random intervals
Encoding:Over 16 million possible combinations
Total Message Length36 bits
Height1.8 - 2.4 m (6 - 8 ft)
Installation OptionsSurface or corner
RFI Protection>10 V/m up to 2000 MHz
Operating Temperatures14°F to 122°F (-10°C to 50°C)
Storage Temperatures -4°F to 140°F (-20°C to 60°C)
Compliance with StandardsDesigned to meet FCC Part 15
Important notes:
Defective exchanges for identical item within Manufacturer’s warranty period.
Manufacturer contact information: Visonic Inc, Tel: (860) 243-0833


5 Ratings
5 star: 60%  (3)
4 star: 40%  (2)
3 star: 0%  (0)
2 star: 0%  (0)
1 star: 0%  (0)
Average Customer Rating
(5 customer ratings)
Share your thoughts with other customers
BORDYN -- bangkhen, XX   7/15/2012
This perfectly suites my existing visonic powercode system. very sensitive comparing with "Next" series, however you have to install it correctly (LED on top) otherwise this might barely work.
JOHN -- pleasant hill, CA   9/2/2011
This is a good detector but I still haven't been able to spend enough time with the base unit to get it to work. I'm a controls engineer by trade; this system has a steep learning curve...
FRANK -- philadelphia, PA   11/6/2010
I'm really pleased with the area coverage and responsive of this PIR. Thanks.

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