12V Modbus RTU 4 Way Relay Module with STM8S003F3P6 RS485 CommunicationRelay communication: Multi unit network 485 communication, based on MODBUS RTU protocol, the default communication address is 1, users can modify the address by instructions IN1 IN4 are connected to the switch. The switch status is read through 485, not through the input control relay output. Specification Operating Voltage 12V DC Switching Capacity AC 250V @10A, DC 30V @10A Controller STM8S003FP6 Channel 4 Size 79x77. 6x19. 3mm

These are Metal Film Resistor with a value of 56 ohm 1W and tolerance of ±5%

Supports USB audio mode

Advanced RISC Architecture High Endurance Non-volatile Memory Segments

You can simply insert the batteries in it because of the spring clip design

and a visible bar display shows the charge status of the battery in real-time

Gold for these 4K7 resistors

it works fine for more than 300000 cycles

47E resistors

This is a high-quality Surface Mount Resistor with a 4-digit resistance code and outstanding solderability

1MM is a 3-pin female DC power connector jack socket

LED Shape Round Emitting Colour Red

lightweight