... AT309 is a coin-operated and wall-mount breath alcohol tester which is suitable for public use in bars, restaurants, ... bar or restaurant, hotel, disco etc Fuel Cell Sensor, Sensor Module rechangeableCoin operated Used by disposable strawStraw box for 200pcs straw one ... ,% BAC optionalCoin for single time: 0—15 (For 0, the tester can be tested without coin).Coin diameter: 20mm – 28mmCoin thickness ...