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NBM 3500 Series

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Designed to simplify your business through reliable, field-proven performance.  


Vertical Sensing   

Magnetic head and optical sensors are positioned away from dirt and protected from salting, resulting in longer life and fewer service calls. Vertical configuration enables easy cleaning, if required.  


Anti-Salting System   

Built-in protection includes water drain and no electronics in lower chute; saltwater never reaches bill path or electronics. 


Pullback, "Yank Cheat" Protection  

Motor-driven shutter remains closed when in standby mode, protecting validator from salting, vandalism and cheating.  


Unique Bill Stacking Method  

Two cam design stacks more bills in less space than conventional validators. 


High Acceptance Rate  

$1, $5, $10, $20 Bills and Coupons. 


Optional Security Bezel   

Metal bezel protects validator from vandalism. Available factory-installed or as a retrofit kit. 


All-Plastic Construction   

Lightweight, easy to clean and service. 


Swing-Open Stacker   

One latch opens bill stacker, making it easy to collect bills. 


LED Diagnostics  

Indicates status of validator, making field service easier. 


Two-Belt Bill Transport   

Contributes to longer belt life and easier servicing system rated at over 200,000 operations. 



Limited 2-year warranty. 


NBM-3500 series Bill Validator 

Field Tested, Field Proven   

Conlux . . . Simply the right choice  



the MEI value brand of bill and coin validator products  

Simple operation.   

Maximum durability  


NBM-3500 Specifications  


Interface Multi-Drop Bus 


Operating Voltage 


Power Consumption 

Standby 0.30A or less 

Operating State 

Motor Operation 0.60A or 

Less Peak Max. 4 sec. 1.20A or less 

Operating Temperature Range 

5 F (-15 C) to 140 F (+60 C) 

Insulation Resistance 

20M Ohm or more 


400 Stacker: 2.24 lbs. (1.02 Kg) 700 Stacker: 2.48 lbs. (1.12 Kg) 


400 Stacker 

HxWxD: 10.92" x 3.62" x 5.59" (277.3mm x 92.0mm x 141.0mm) 

700 Stacker HxWxD: 10.92" x 3.62" x 7.16" (277.3mm x 92.0mm x 181.9mm) 

Pullback Prevention 

Shutter System 

Escrow Function Available 

Front Mask 

Bottler Mask and Full-line Mask available 

Front Mask Lamp Available 

for Bottler Mask and Metal Mask 

Bill Acceptance 

2-Way Face-up 

$1, $5, $10, $20 and Coupon 

Switch Selectable for $5, $10, $20 and Coupon 


"We have used Conlux coin mechs and validators since June of 2001. I have not come across another brand as reliable and inexpensive as Conlux. Even in the dirtiest conditions, you can count on Conlux to work every time. I would highly recommend their products to everyone in the vending industry."  


Darryl Martin  

Service Department ManagerD&S/Davians  


About the Conlux product line  

Conlux is the MEI value brand of bill and coin validator products, acquired by MEI in 2003. The Conlux brand is the leading payment systems product in Japan, and has been distributed in North America since 1985. Established in Japan in 1967 to produce and sell coin mechanisms for vending machines, Conlux products are designed to simplify business through reliable, field-proven performance.   



MEI Corporate Headquarters  

1301 Wilson Drive West Chester, Pennsylvania 193801 







2009 MEI. All rights reserved. (8/09)  














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