Modbus RTU Octal Relay Module RS485 / TTL UART 8 Inputs 8 Outputs Switch Board

Manual Click here to openFeature 1 Onboard mature and stable STM8S103K3T6 MCU and MAX485 level conversion chip2 Communication protocol support standard Modbus RTU protocol3 Communication interface support TTL UART interface with RS485 5V level4 Communication baud rate 4800 9600 19200 default 9600bps support to save after power off5 The signal range of optocoupler input DC3 3 30V this input cannot be used for relay control 6 Output signal relay switch signal support manual flash off flash off mode flash off flash delay base is 0 1S maximum flash off flash time can be set to OxFFFF 0 1S 6553 5S7 Device address range 1 255 default 255 support to save after power off8 Baud rate input signal relay status device address can be read using software command9 On board 8 channel 5V 10A 250v AC 10A 30vDC relay which can be continuously attracted 100 000 times with diode bleed protection short response time10 Onboard relay switch indicator11 STM8 SWIM program is reserved for programming supporting customers to download their own firmware for secondary development12 Power supply voltage DC7 30V 5 08mm terminal power supplyPackage includes 1 x Realy board1 VCC GND DC7 30V 5 08mm power input terminal2 DC3 3 30V optocoupler signal input IN1 IN8 Positive channel 1 8GND IN Channel 1 8 common negative3 A B RS485 communication interface A B are connected to A B of external control terminal respectively4 5V SWIM GND NR