Elevator Sub-Controller Distributed elevator controller Connectable with up to 16 relays to control floor buttons in the elevator RS-485 communication with the master elevator controller DIP switch settings for device address and relay types Up to 8 distributed elevator controllers can be linked to the master elevator controller Control the elevator via the relay Available models: DS-K2M0016A Product Data Device Interface RS-485 Interface2 Alarm Input2 Relay Output16 Buzzer1 General Working Temperature-40°F to 158°F Working Humidity0% to 90% (No Condensation) Power Supply12 VDC±15% InstallationGuide Rail Installation Tamper-Proof1 Dimensions167(L)mm*105(W)mm*30(H)mm System Parameter Processor32 bit , RS-485 Interface2 Alarm Input2 Relay Output16 Buzzer1 , Working Temperature-40°F to 158°F Working Humidity0% to 90% (No Condensation) Power Supply12 VDC±15% InstallationGuide Rail Installation Tamper-Proof1 Dimensions167(L)mm*105(W)mm*30(H)mm , Processor32 bit