When the microphones are hot, you can’t just yell “Hey, you’re on!” That’s why you need the Studio Signal Light (broadcasters call these “tally lights”). Available in five sizes with one to five colored segments. The red segment tells everyone you’re on the air. The other colored segments can be used to indicate just about anything. A flashing light can replace a ringing phone. Another light can warn talent of an upcoming break. A special light for the pizza delivery guy? You’ll be coming up with plenty of your own bright ideas.