J-SJP-M manual fire alarm button has a simple structure, novel ... choice. I. Brief introduction and applicationJ-SJP-M manual fire alarm button has a simple structure, novel design and ... easy installation. It is applicable to the fire alarm equipment of factory, warehouse, hotel, large and ... not more than 95% (at 25°C)IV Specifications.Manual Call Point Button (break glass) J-SJP-M-IManual ...