CE035_S 2 Channel RS485 Relay 12V Switch Board Modbus POLL AT command PLC for PTZ Camera Electric Door Water Pump LED with Shell Specifications: DC 12V power supply (voltage range 9-13V, 5V version can be customized ) Standby current (all relays closed) 7-8MA, 1 relay open 40MA, 2 relays open 73MA ''Open'' ''close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' 6 Commands Two instruction-control mode : AT command and MODBUS command Under the AT command ,the maximum delay is 9999 seconds Under the MODBUS command ,the maximum delay is 255 seconds AT commands can be made serial HyperTerminal (serial assistant) Enter; MODBUS commands can be made serial HyperTerminal (serial assistant) OR ''Modbus Poll'' Enter; Under the MODBUS command mode, it can support up to 32 devices in parallel Size: 79*47.5*19.5mm (excluding shell), 81*50*32 mm(including the shell) Weight: 40 g (excluding shell) 72g (including shell) 10 Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC Application: Automated industry PLC Smart Home,Home Automation ,Wiser Home; Identification system; Motor FW & BW Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement. Package includes: 1x 2 Channel RS485 Relay