8 I n p u t D e v i c e s Overview The 276B-1120 noncoded fr e alarm station is a contemporary styled Lexan station, fexibly designed to meet a wide variety of application r equir ements and operational sequences. The station is single action with terminals for feld wiring connections. A key (supplied) is r equir ed to r eset mechanism. For semi fush mounting use a standar d North-American 4 inch squar e box with single gang plaster cover having an overall minimum depth of 2-1/4 inches (57mm). For surface mounting use a Cat. No. 276B-RSB surface back box. Installation and Mounting Fir e Alarm Stations 2 7 6 B - 1 1 2 0 Standar d Featur es • Single pole contacts • T erminals for feld connections • General alarm operation • Key lock r eset • Br eak glass operation • Surface or semi fush mounting • Red fnish • Contemporary styling • Rugged LEXAN construction • Latch action until r eset Operation T o initiate an alarm and br eak the glass r od on the 276B-1120, pull down on the handle marked “Pull for Fir e”. The alarm handle latches in the pulled position until the station is manually r eset. T o r eset, the station is opened using a Cat. No. 276-K1 key supplied with the station; the toggle switch is r estor ed to its normal position, the br eak glass r od is r eplaced and the station is r eclosed. Or dering Information Cat. No. Description 276B-1120 Single action pull stations. General alarm contacts with scr ew terminals. Key operated r eset. Single Pole Alarm Contact. Open Cir cuit. 3.0 Amps, 30V AC, Resistive Load 1.0 Amps, 28Vdc, Resistive Load Accessories 276-GLR Replacement glass r ods - 20 per package 276B-RSB Surface back box, r ed 3-9/16" (91mm) 1-3/8" (35mm) 1-31/32" (50mm) 2-1/4" (57mm) 5-3/16" (132mm) 4" squar e backbox and plaster cover with single gang opening having overall min. depth of 2-1/4" (57mm) 2-7/16" (62mm) 3-1/2" (89mm) 276B-RSB 5-1/32" (128mm) 1-38" (35mm) 2 7 6 B - 1 1 2 0