... performance3. Alarm Output: sound light alarm, net-work signal , robot hand signal output4. Strong torsional force, capable of switching off solenoid ... valve6. Material of Shell: ABS, electrostatic resistance surfaceGas detector Specifications:Model:CA-386DAlarm Concentration:Hydrogen:125~750*10-6,Natural Gas ... line with ISO7 / 1 StandardWay of Switch onManual Gas detector with electromagnetic valve