5 Years Gold Supplier, Coin operated alcohol tester, proffessional alcohol tester, coin operated breathalyzer, alcohol tester Sensor type Fuel cell sensorWorking Voltage AC110V~AC220V 50/60HZWorking ... (For 0, the tester can be tested without coin)Coin diameter 20mm – 28mmCoin Thickness 1.2mm – 2.5mmCoin capacity 200pcsStraw capacity 200pcs(≤7mm) Coin Operated Alcohol Tester