Microcontroller development board can be used as modules, can be used as appliance control.
5V-12V control signal of the TTL.
Control DC signals
There is a normally open and one normally closed contact
Power LED
Controlled light, pull off, off off
Increased transistor drive a relay coil, the control pin high impedance.
Control pins have pull-down circuit, to prevent floating relay malfunction
Note! Not for professional use. Do not use this device to operate mains voltage devices. Only for voltages under 50VAC/DC.
