KY-019 5V 1-channel relay module high-level trigger
The 5V relay module is suitable for IOT projects with Arduino development boards.
- Operating voltage / TTL control signal: 5 V - 12 V
- One normally open (NO) and one normally closed (NC) contact
- A power indicator LED
- A control indicator LED, inactive when the relay is inactive
- Please only use the relay for switching low voltages (i.e. below 12 V).
- Working with higher voltages or mains voltage can lead to life-threatening injuries and is therefore reserved for trained specialists.
- For the switching of higher voltages there are inexpensive and certified devices from leading providers in the smart home environment.