Description
Conlux NBM Series Bill Validator (MDB)
Reliable MDB bill validator designed for vending machines and other unattended payment applications. The Conlux NBM-3000 series accepts U.S. $1 and $5 bills (including newer series notes) and supports coupons, with strong anti-salting and pullback protection.
Key features
- Accepts $1 and $5 bills (2008+ currency compatible on most units)
- Multi-Drop Bus (MDB) interface
- Vertical sensing with magnetic and optical sensors for longer life and easier cleaning
- Built-in anti-salting protection (water drain, electronics protected from the bill path)
- Motor-driven shutter provides pullback / “yank cheat” protection
- Two-belt transport for reliable bill movement and extended belt life
- Swing-open stacker for easy cash collection
- LED diagnostics for simpler field service
- Lightweight all-plastic construction
Common models
- NBM-3110 (typically 700-note stacker)
- NBM-3120 (typically 400-note stacker)
- NBM-3130 / NBM-3140 and related variants
Stacker capacities and faceplates (masks) vary by model; 3110 and 3120 units are generally interchangeable with the matching stacker.
Electrical
- Operating voltage: +34 VDC
- Suitable for standard MDB vending machine power systems
Typical applications
Soda, snack, and other full-line vending machines that use an MDB bill validator. A practical, field-proven option for operators who need dependable $1/$5 acceptance.
Confirm exact model, stacker size, and harness requirements before ordering. Units are refurbished with new belts, basic testing, and come with a one year warranty

