The slot machine interface used in Study 1 and Study 2

SAS is a serial protocol with RS232 or in some cases TTL levels My boss wants that the machine isn't playable if the player card isn't inserted

SIM800L GPRS GSM Module Core Quad-band TTL Serial Port IPX Interface PCB Antenna Micro SIM Card for Arduino Smart Phone Free shipping over US $10

slot machine promotions SIM800L GPRS GSM Module Core Quad-band TTL Serial Port IPX Interface PCB Antenna Micro SIM Card for Arduino Smart Phone Free shipping over US $10

slot เติม wallet Trouble Shooting Repair Rates Interface Board Circuit Designation · Summit Systems Slot Machine Electronics Pictures · J17