12 I n p u t D e v i c e s Standar d Featur es • Sensitive to visible and invisible pr oducts of combustion • Stable, r eliable design • Non-polarized • At-a-glance alarm indication • Rate-compensated heat detector technology Mounting Standar d base mounts to the following electrical boxes: • North American 3 1/2 inch octagon boxes • North American 4 inch octagon boxes • North American 1-gang electrical boxes • Eur opean 1-gang boxes with 60.3 mm fxing centers • Eur opean BESA boxes 2.4" (61mm) 4.65" (118mm) CONTINUES... Overview The EC Series of low-pr ofle plug-in smoke and heat detectors measur e-up to the quality and performance standar ds that have made EST fr e detection pr oducts the industry’ s best price- performance buy available today . Meticulously engineer ed to deliver high-performance featur es, superb r eliability , and unbeatable quality , the EC Series is a low-cost solution for conventional detection applications. The EC30U-3 photoelectric detector distinguishes itself as a performance leader in its class with its highly stable design that r esists air movements caused by heating and air conditioning, and changing envir onmental conditions. This makes it a r eliable performer ideally suited to moder n building interiors. The EC20FTU-3 is a high-performance fxed-temperatur e heat detector with an alarm thr eshold of 135° F (58° C). The EC20RRU-3 also has an alarm thr eshold of 135° F (58° C), but it incorporates an advanced rate compensation sensing element that causes the detector to become mor e sensitive when an incr ease in the rate of temperatur e rise is detected. Thanks to their advanced thermistor technology , EC Series heat detectors ar e ideal for a wide range of applications wher e smoke detection is inappr opriate. The EC20RRU-3 rate-of-rise detector is well suited to ar eas such as kitchens and shower r ooms, wher e the ambient temperatur e is r elatively constant, but wher e steam and smoke ar e pr esent. The EC20FTU-3 fxed-temperatur e detector is ideal for laundries and industries wher e fuctuations in ambient temperatur e is expected. W e r ecommend that all detectors be installed accor ding to the latest r ecognized edition of national and local fr e alarm codes. The installation and maintenance advantages of EC Series detectors add value to these pr oducts thr oughout their service life. Their twist- and-lock design makes short work of installation and maintenance operations. A plastic br eakout on the detector housing optionally pr events r emoval fr om the base except with a special tool. A bright, easy-to-see LED on the detector glows steady when it is in alarm, thus eliminating much of the guesswork r esponding to fr ont-panel indications. If a detector is r emoved for any r eason while the panel is in its normal state, a zone tr ouble condition will r esult. This ensur es the integrity of the alarm system at all times. E C 2 0 F T U - 3 , E C 2 0 R R U - 3 E C 3 0 U - 3 EC Series Smoke and Heat Detectors E C 3 0 U - 3 P h o t o e l e c t r i c a n d E C 2 0 H e a t D e t e c t o r s