警告装置 meaning in English

alarm beeper
caution device
device; warning
warning device

Shipbuilding - bridge alarms and indicators - application
造船.桥梁警告装置和指示仪.应用
Airplane stall warning device
飞机失速警告装置
Cab warning apparatus
机车警告装置
Plastic warning devices for underground cables and pipelines with visual characteristics
具有视觉特征的地下电缆和管道用塑料警告装置
Radiation protection instrumentation - monitoring equipment - personal warning devices for x and gamma radiations
防辐射仪器.监测设备.个人用x和射线辐射警告装置