Special Features:

Microprocessor-based 8 channel scanner with built-in annunciator; independent alarm input for each channel; first out alarm indicator; available in 115 and 220 ac volts

Properties:

A signaling apparatus which operates electromagnetically and serves to indicate visually, or visually and audibly, whether a current is flowing, has flowed, or has changed direction of flow in one or more circuits. It is usually employed in connection with alarms, electric bells, or buzzers. See also alarm (as modified).