Special Features:

2for use in high noise areas where visual indication is required; 19 stations with a h27a jack to the left of coiled cord and 6 inch external steel gong (bell), indicator light, "push to reset" button, and a latching relay; total weight 10 lbs

Properties:

An item specifically designed to convert sound into variations of an electric current and to reconvert similar variations into their original sound with sufficient accuracy for clear intelligibility. It consists of a telephone transmitter, telephone receiver, and a switch and is primarily used for voice communications. Includes pedestal type, cradle type and hang-up type telephones. Does not include separate handsets or head and chest sets.