The durable, high impact plastic interior of the 1150 handset provides years of trouble-free service. The 1150 handset offers exceptionally clear audibility as well as a pleasant electronic call tone to announces a visitor's call. Suitable for use in electronic call systems to replace door hone 1131-1132-1133-1140. OPERATION An electronic call tone announces a visitor's call. Lifting the 1150 handset establishes communication with the visitor. Upon identifying the visitor, pressing the door release button allows the visitor entry into the complex. To end the call, simply hang up the handset.