Wheelock MT-12/24-R S/F 11/09 The connections for the external

The connections for the external power supply and the communication loop are isolated to prevent electrical interaction between them

they produce a loud sound to notify occupants to evacuate the buildings

ionization smoke alarm that operates on a 120V power source with sealed-in lithium battery backup

In a normal standby condition

ALARM SILENCE

Wheelock MT-12/24-R S/F 11/09 The connections for the externalThe Wheelock MT multitone horns and horn strobes offer a choice of eight (8) nationally and internationally recognized alerting sounds: Horn, Bell, March Time Horn, Code 3 Tone, Code 3 Horn, Slow Whoop, Siren or Hi Lo Tone. The Code 3 Horn and tone patterns are engineered to comply with NFPA ANSI Temporal Pattern specifications without requiring additional equipment. With MT horns and horn strobes, one alarm appliance meets most of your signaling