16 channel relay module 5v power supply control board module 5V12V with optocoupler protection LM2596

12V Time Delay Relay Module Car Start Delay Switch Time Relay Module

DC 5V & DC12V ESP8266 WIFI 4-Channel Relay Module IoT Wireless Transmitter

ESP8266 WIFI 4-Channel Relay Module is 4 channel WIFI relay module carried a ESP8266 WIFI module and mature 8 bit MCU, with Professional switching power supply circuit.It could control the relay by Android phone APP within the local area network (LAN).It is easy to set .

Relay Module For ARM PIC AVR DSP 10A 5V 2 Channel Relay Module Shield

Specifications :
Size: 3.9cm x 5.1cm
Materials:
PCB board and electronic components
Package included :
1 x 5V 2-Channel Relay Module Shield

24-hour timed 5 time periods real time relay module clock control/delay and clock synchronization module

ESP32 WIFI BLE Single/Dual 4/8 channel Relay Module ESP32 Secondary Development Board

ESP8266-01/01S relay module WIFI smart socket/switch module compatible with Arduino

XH-M131 5V 12V 24V Light Control Switch Photoresistor Relay Module Detection Sensor 10A brightness Automatic Control Module

Voltage version

5V 12V 24V

Static current

4mA

Working current

65mA

Trigger voltage

0-2V

Trigger current

2mA

4 channel 5V 12V 24V relay module with optocoupler low level trigger development board module

5 V-12V to TTL control signal
The control signal DC or AC, 220V AC load can be controlled.
There is a normally open and one normally closed contact
A power indicator light
A control indicator, pull off, disconnect does not shine
Transistor drive to increase the relay coil control pins high impedance.
The control pin has a pull-down circuit to prevent malfunction relay vacant.