1PCS 5V/12V relay module KY-019 1/2/4/6/8 relay/optocoupler isolation #YT

1PCS ESP8285 WIFI control relay Intelligent switch wireless control board 12V#YT

1PCS Photodiode plus relay module light control switch light detection 5V 12V#YT

1PCS Hand sweep sensor switch module LED light non-touch 5V 12V #YT

1PCS 5V 12V relay module NE555 switch 1-10 seconds delay switch on disconnect#YT

1PCS 1 way 5V 12V high power relay 30A, 250V/high level drive relay module #YT

1PCS Water level controller Switch module Sensor controller 5V/12V switch #YT

1PCS 12V soil moisture sensor relay control module #YT