Safety Controller Model : ASC-100 Channel : 10~20 Comm. : 4-20mA, RS-485, Relay App. : CE Multi Channel Gas Detector Receiver Model : GTC-200A / 210A Channel : 1~64 Comm. : 4-20mA, RS-485, Relay App. : CE, KR, KFI Single Channel Gas Detector Receiver Model : GTC-520A / 540 / 542 / 540A / 550 Channel : 1 Comm. : 4-20mA, RS-485, Relay App. : CE Single Channel Gas Detector Receiver Model : GTC-520A Channel : 1 Comm. : 4-20mA, RS-485, Relay App. : CE Multi Channel Explosion Proof Type Gas Detector Receiver Model : GTC-200F Channel : 4 Comm. : 4-20mA, RS-485, Relay App. : KCs Single Channel Explosion Proof Type Gas Detector Receiver Model : GTC-520F Channel : 1 Comm. : 4-20mA, RS-485, Relay App. : KCs Touch Screen Monitoring System Model : GMS-2000 Self-standing panel Comm. : 4-20mA, RS-485, Relay, etc. App. : KFI, CCCF Customizing type Customazing type Self-standing panel Program : Siemens, LG, LS etc.