🪜⚡️💡

#ladder logic #plc program #electrical control #plc ladder diagram #industrial electricity #control signal

🎵🎹➡️🎛️

#midi #music data #synthesizer #sequencer #control signal #draobyek #digital audio

🚩🚦📡

#semaphore #signalling #control signal #visual signal #remote communication #coordination

🪟→🎛️

#ir transmitter #remote controller #infrared control #control signal #ir led #device control #sending command

🏛️📜🚦

#regulatory body #government regulator #oversight agency #control signal