4 Channel 24V Relay Module with Optocoupler 200K It can be mounted in

It can be mounted in the conical hole

7 ohm 1/2W and tolerance of ±5%

With a new tip for your soldering gun

each of which can operate one stepper motor or two DC motors individually

one key return

4 Channel 24V Relay Module with Optocoupler 200K It can be mounted inThis 24 Volts operated 4 Channel Relay Module is an interface board any controller like Arduino, AVR, PIC, ARM, etc., can control it using digital signals. This module is capable of handling high currents such as AC250V 10A or DC30V 10A. The digital outputs from controllers and processors control larger loads and devices such as DC motors, AC motors, and other AC and DC devices. It's a four channel relay module, which means it can control up to four