Pyramid Apex 7400-UB4 Bill Acceptor (MDB)
24V MDB vending configuration with standard bezel — plug-and-play for MDB machines.

The Apex 7400-UB4 is engineered for 24V MDB vending applications, connecting directly to MDB-compliant vending controllers. Over 15 years of proven field performance, >95% acceptance on $1–$20 and a 500-note non-locking stacker make it a straightforward upgrade or replacement in vending routes.
Key features
- Accepts US $1, $5, $10 and $20 notes (7400 series)
- 24V MDB interface — plug-and-play with MDB vending controllers
- Standard Pyramid bezel with lighted bill-entry arrows
- 500-note non-locking stacker included
- Bill acceptance rate greater than 95%; processes up to 20 bills per minute
- Dual-stage optical anti-stringing technology with enhanced magnetic sensing
- Automatic self-calibration — no manual adjustment required
- DIP-switch and PC configuration; flash firmware updates via PRO-2, BluStream or USB cable
- Made in the USA — designed for 20+ years of field reliability
Specifications
| Model / SKU | 7400-UB4 |
|---|---|
| Denominations | $1 – $20 (USD) |
| Power / interface | 24V MDB |
| Bezel | Standard Pyramid bezel |
| Acceptance rate | Greater than 95% |
| Speed | Up to 20 bills per minute |
| Maximum bill width | 72mm |
| Stacker | 500-note non-locking stacker |
| Security | Dual-stage optical anti-stringing + enhanced magnetic sensing |
| Calibration | Automatic self-calibration |
| Configuration | DIP switches, PC flash updates, PRO-2 or BluStream |
| Origin | Made in the USA |
Installation & setup notes
The 7400-UB4 is the standard-bezel MDB model for snack and beverage vending; it pairs with MDB coin mechanisms and card readers on the same bus.
The UB4 talks MDB (Multi-Drop Bus) at 24V, the standard for snack, beverage and combo vending machines. Plug the MDB harness into the vending controller and the acceptor is recognised by the VMC — no pulse settings to match, and it coexists with MDB coin mechs and card readers on the same bus.
Uses Pyramid's standard bezel footprint; check your cabinet's cutout against the Apex 7000 mounting drawing before ordering.
Not sure this is the right Apex?
The Apex 7000 family shares one validator platform; models differ by power/interface, bezel and denominations. The 7400-UB4 is the 24V MDB / Standard Pyramid bezel / $1 – $20 (USD) configuration. Closest alternatives:
- Need 12VDC instead (power / interface)? Choose the Apex 7400-UB1.
- Need 110VAC (internal power supply) instead (power / interface)? Choose the Apex 7400-UB3.
- Need Coinco-style bezel instead (bezel)? Choose the Apex 7401-UB4.
- Need VFM-style bezel instead (bezel)? Choose the Apex 7402-UB4.
- Need Bahamian dollar (BSD) instead (denominations)? Choose the Apex 7600-UB4-BHS.
Manuals & setup documentation
- Apex 7000 Series User Manual (UL)Full installation, DIP-switch and operation manual · PDF
- Apex 7000 Brochure (Rev D)Series overview and options · PDF
- Apex Configuration CardsPrintable coupon-style configuration cards · PDF
- Apex Connections & PinoutsHarness and connector reference · PDF
- Apex RS-232 Interface ManualSerial protocol reference for integrators · PDF
- Apex 7000 cleaning instructionspyramidacceptors.com
- Acceptor Tools setup instructions (PC configuration)pyramidacceptors.com
- Pyramid software downloads (Acceptor Tools, firmware)pyramidacceptors.com
Related products
All products
Apex 7400-UB1 Bill Acceptor
12VDC Apex with standard bezel and 500-note stacker — the go-to configuration for amusement and gaming.

Apex 7400-UB3 Bill Acceptor
110VAC-powered Apex for equipment with wall power — no external supply needed.

Apex 7401-UB4 Bill Acceptor (MDB, Coinco Bezel)
24V MDB Apex with Coinco-style bezel for MDB vending machines.
