Features: Suitable for a variety of coins, and the coin diameter is 20mm ~ 30mm, thickness is 1.7mm ~ 2.4mm. Controlled by CPU program, with high accuracy of scoring. Equipped unique electromagnetic interference prevention program. Design with accurate grade / normal grade, more smoothly to insert coins. Made of high quality plastic and metal, sturdy and durable in use. Can be used in arcade game machine.Specifications: Application coin diameter: 20mm ~ 30mm Application coin thickness: 1.7mm ~ 2.4mm Material: plastic, metal Work voltage: DC12V20% Work temperature: -15 ~ 75 Size:Approx. 124 x 124 x 64mm/4.9 x 4.9 x2.5inch Weight: 265g Instructions: 1. Please remove the plastic COINS in the slot and replace the COINS to be used. 2. For One yuan RMB coin, please transfer to RMB special file (SW3) 3. With the need of circuit board, select N.O (often open) and N.C (often closed) switching, 4. Select the CDIN signal length and speed three stage switch (SW2). 5. The sensitivity adjustment of the coin selection of VR knobs, clockwise +, the selector is looser; counterclockwise -, the selector is stricter. Package Included: 1 x CPU Coin Selector 4 x Screw Bolt 4 x Nut Note:Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.