ELECTRONICS-SALON DPDT Signal Relay Module, 12Vdc, RY12W-K Relay. Has Assembled.

ELECTRONICS-SALON Two DPDT Signal Relay Module Board, DC12V Version, for PIC Arduino 8051 AVR.

HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger

Electronics-Salon 4 DPDT Signal Relay Module Board, DC 12V Version, for Arduino Raspberry-Pi 8051 PIC.

UCTRONICS DC 12V Programmable Multifunction Time Delay Relay Module with Segment LEDs Display & H/L Level Trigger for Smart Home, Automatic Control

DZS Elec 12V 2 Channel High/Low Level Trigger with Optical Isolation Relay Module Fault Tolerant Design Load AC 0-250V/10A DC 0-30V/10A Circuit Switch Board

ELECTRONICS-SALON DPDT Signal Relay Module, 5Vdc, RY5W-K Relay. Has Assembled.

UCTRONICS DC 12V Time Delay Relay Module for Smart Home, Tachograph, GPS, PLC Control, Industrial Control, Electronic Experiment, Arduino Robot

Timer Relay, DROK Time Delay Relay 5V 12V 24V Delay Controller Board Delay-off Cycle Timer 0.01s-9999mins Trigger Delay Switching Relay Module with LCD Display Support Micro USB 5V Power Supply

JVR 12V Timer Switch Programmable Digital 12 Volt DC/AC/Solar Battery Powered

12MM Waterproof Momentary Push Button Switch 15PCS ON- OFF Switch (5 Colors)