煙霧報警器，別稱火災煙霧報警器、煙霧傳感器、煙霧感應器等。由總線供電，總線上可以連接有多個，與火災報警控制器聯網、通訊組成一個報警系統，報警時現場無聲音，主機有聲光提示，這類感煙報警裝置一般稱之為感煙探測器。感煙探測器分帶地址編碼的、不帶地址編碼
離(li)子(zi)煙(yan)霧報(bao)(bao)警(jing)器有一個電(dian)(dian)離(li)室(shi)，離(li)子(zi)室(shi)所用放(fang)射元素--镅241(Am241)，強度約0.8微(wei)居里(li)左右(you)，正常狀態(tai)(tai)下處(chu)于電(dian)(dian)場的(de)平(ping)衡狀態(tai)(tai)，當有煙(yan)塵進(jin)入電(dian)(dian)離(li)室(shi)會破壞這種平(ping)衡關系，報(bao)(bao)警(jing)電(dian)(dian)路檢測到濃度超過設定的(de)閾值時會發(fa)出(chu)報(bao)(bao)警(jing)。
光電煙霧報警器內有一個光學迷宮，安裝有紅外對管，無煙時紅外接收管收不到紅外發射管發出的紅外光，當煙塵進入光學迷宮時，通過折射、反射，接收管接收到紅外光，智能報警電路判斷是否超過閾值，如果超過發出警報。
離子(zi)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)對微小(xiao)的(de)(de)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)粒子(zi)的(de)(de)感應要靈敏一(yi)(yi)些，對各種煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)能(neng)均衡響應;而(er)(er)前向式(shi)光(guang)(guang)電煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)對稍(shao)大(da)(da)(da)的(de)(de)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)粒子(zi)的(de)(de)感應較靈敏，對灰煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)、黑煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)響應差些。當發(fa)生(sheng)熊熊大(da)(da)(da)火(huo)(huo)時，空(kong)氣(qi)中煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)的(de)(de)微小(xiao)粒子(zi)較多，而(er)(er)悶燒(shao)的(de)(de)時候，空(kong)氣(qi)中稍(shao)大(da)(da)(da)的(de)(de)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)粒子(zi)會多一(yi)(yi)些。如果火(huo)(huo)災發(fa)生(sheng)后(hou)，產(chan)生(sheng)了大(da)(da)(da)量的(de)(de)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)的(de)(de)微小(xiao)粒子(zi)，離子(zi)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)會比(bi)光(guang)(guang)電煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)先報(bao)(bao)警(jing)(jing)。這(zhe)兩種煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)時間(jian)間(jian)隔不大(da)(da)(da)，但是(shi)這(zhe)類(lei)火(huo)(huo)災的(de)(de)蔓延極快，此類(lei)場(chang)所建議安(an)裝(zhuang)離子(zi)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)較好。另一(yi)(yi)類(lei)悶燒(shao)火(huo)(huo)災發(fa)生(sheng)后(hou)，產(chan)生(sheng)了大(da)(da)(da)量的(de)(de)稍(shao)大(da)(da)(da)的(de)(de)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)粒子(zi)，光(guang)(guang)電煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)會比(bi)離子(zi)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)先報(bao)(bao)警(jing)(jing)，這(zhe)類(lei)場(chang)所建議安(an)裝(zhuang)光(guang)(guang)電煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)。如果你想將(jiang)兩者的(de)(de)長處兼而(er)(er)有之，你可以在要求安(an)裝(zhuang)煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)的(de)(de)地方將(jiang)兩種煙(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)霧(wu)(wu)(wu)(wu)(wu)報(bao)(bao)警(jing)(jing)器(qi)(qi)(qi)都安(an)上。
