功能描述
　　1.冷庫呼叫報警裝置接收到冷庫報警呼叫按鈕信號時，對應按鈕上的報警燈閃亮，冷庫呼叫報警裝置發出聲光報警，外接輸出報警，同時，冷庫呼叫顯示板也相應發出聲光報警。
　　2.冷庫呼叫報警裝置上的“消音”鍵，可暫停聲音報警和外接輸出報警，但報警狀態指示燈常亮。若按冷庫呼叫顯示板上的“消音”鍵，可暫停聲音報警，但報警狀態指示燈常亮，直道冷庫報警裝置解除信號后，報警撤銷，相應報警狀態指示燈熄滅，蜂鳴器不發聲，進入待機狀態。
　　3.冷庫呼叫報警裝置上的“測試”鍵可以對系統本身進行測試。
　　4.冷庫呼叫按鈕帶自鎖，帶電源指示燈和報警指示燈。
　　Functional Description
　　Refrigerator call alarm device receives the Refrigerator alarm call button signal, the corresponding button on the alarm shining. Refrigerator call alarm device send out sound and light alarm, external output alarm, at the same time, the Refrigerator call display board also corresponding send out sound and light alarm.
　　Refrigerator call alarm device on the “mute” button, can suspend voice alarm and external output alarm, but alarm state light Chang Liang. If according to the Refrigerator call display board” sound attenuation” button, can suspend voice alarm, but alarm state light Chang Lang, until the Refrigerator alarm device life signal, alarm undo, corresponding alarm state light extinguished, buzzer not uttered his voice, and enter the standby state.
　　Refrigerator call alarm device on the “test” key to test the system itself.
　　Refrigerator call button with self-locking, With power light and alarm light.