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Black rectangular counterfeit detector with UV light, backlight and pen, 8.00 x 4.00 inches

Dri-Mark

Dri-Mark 351TRI Counterfeit Detector Black 8.00 x 4.00

SKU CH-3ZSQ-S81M2 MPN 351TRI

Performs UV, watermark and paper tests on US currency, IDs and cards; measures 8.00 by 4.00 inches

  • Product typeCounterfeit Detection
  • Key featuresDetects authenticity of bills, IDs, credit cards, and other
  • Product colorBlack
  • Size details8 in × 4 in (L × W)
  • Three-in-one detection covers currency IDs and documents
  • UV LED reveals security thread on notes from 1996
  • Backlight shows watermark portrait and micro printing
  • Counterfeit detector pen tests paper composition on all dates
  • Compact 8.00 x 4.00 inch design fits any counter

Tri-Test counterfeit detection

The Dri-Mark 351TRI is a compact verification device for cash-handling environments. It performs three distinct checks on US currency, identification cards, credit cards and other secure documents. Retail staff, bar operators and event ticketing teams can confirm authenticity at the point of sale without specialised training. The unit measures 8.00 x 4.00 inches and fits on crowded counters.

LED illumination and battery power

Ultraviolet LEDs expose the security thread on US notes of $5 and above printed from 1996 onward. White LEDs backlight the bill to reveal watermark portraits and micro-printing. A built-in detector pen tests paper composition on all US currency regardless of issue date. The system runs on three C batteries or an optional AC adapter, neither of which are included.

Portable form factor and broad document support

The black housing is small enough to move between registers or off-site venues such as markets and festivals. Beyond US banknotes, the UV and backlight functions authenticate driver's licences, passports, international currencies, credit cards and cashier's checks. This versatility reduces the need for multiple single-purpose tools. Buyers who require mains power from the outset must source the adapter separately.

How it compares

Measured against everything we stock in Register Drawers & Lock Boxes, at today’s prices. Recalculated every night.

Price $28.99
Cheaper than about 72% of the 180 comparable items (median $63.49).

Specifications

Product
Brand nameDri Mark
Model name351TRI
Product typeCounterfeit Detection
Product colorBlack
Size & build
Size details8 in × 4 in (L × W)
Shipping weight0.32 kg
Package size229 × 127 × 102 mm

Questions about this item

How do I install the 351TRI and what step is often missed?

Insert three C batteries into the compartment or connect the optional AC adapter, then press the power button; the step often missed is confirming the UV LEDs illuminate before testing a bill.

What maintenance or replacement will the 351TRI need later?

Replace the three C batteries when the UV or white LEDs dim; the concealed detector pen also requires refills once the ink runs dry.

What limit appears first during sustained use of the 351TRI?

Battery life is the first limit; continuous LED operation drains the three C cells, so keep fresh batteries or the AC adapter ready for long shifts.

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