... for bar or restaurant, hotel AT309 is a coin-operated and wall-mount breath alcohol tester which is ... it is so easy to make a profitable coin-operated vending business.AT309FeatureSuitable for bar or restaurant, hotel, ... disco etc Fuel Cell Sensor, Sensor Module rechangeableCoin operated Used by disposable strawStraw box for 200pcs straw one ... carton, 9.00Kgs per carton AT309 Coin operated alcohol tester