DC 5V 8ch USB Serial Port Relay Module UART RS232 TTL Switch Board CH340 for WIN10 WIN8 WIN7 XP Linux MAX OS -DC 5V-

Description:     1: Working voltage: DC 5V/12V/24V optional  2: (DC12V)Standby current (all relays closed) 12MA, 1 relay open 40MA, 2 relays open 67MA, 3 relays open 95MA,4 relays open 121MA,5 relays open 147MA,6 relays open 173MA, 7 relays open 198MA,8 relays open 223MA 3 UART serial port protocol, support two interfaces, USB_B female interface (CH340 chip), RS232 interface (TTL level) 4 USB interface supports Windows, Linux and MAX operating systems 5: ''Open'' ''Close'' ''Momentary'' ''Self-locking'' ''Interlock'' ''Delay'' "All Relays Open" "All Relays Close" 8 Commands 6 Two kinds of commands: AT command and 8-byte command, the two commands are automatically recognized, no need to switch. 7: Under the ''Delay'' command ,the maximum delay is 9999 seconds(Only AT command) 8 Size: 90 * 62 * 19.5mm 9 Weight: 115 g 10 Maximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDC       For more information, please contact me Without the USB B cable, you need to purchase the USB cable separately.   Application Remote control, remote measurement system;  Wireless meter  ; Smart Home,Home Automation ,Wiser Home; Access control   ; Identification system  ; Data collection;  IT household appliance  ; Intelligence household appliance; Baby monitoring system;