J-SJP-M-type manual fire alarm button, simple structure, novel design, easy installation. For factories, warehouses, hotels, large buildings and the fire alarm devices. 
 When a fire occurs, as long as the crushed glass (Ⅰ type), or press the start part (Ⅱ), output alarm signal button to immediately start the linkage of fire alarms and other fire fighting equipment. (Ⅱ) action, do not need to start replacing parts, simply reset with a key can be reused. 
 Operating voltage: DC24V/AC220V 
 Contact Resistance: ≤ 
 Maximum working current: 5A 
 LED operating current: <5mA (DC24V) 
 Suitable working environment temperature: -10 ℃ ~ +50 ℃ 
 Suitable working environment relative humidity: ≤ 95% (25 ℃ pm)