Shenzhen Sumring Technology Co., Limited  

Product Name: Sumring China Manufacturer metal Door Sensor Alarm Magnetic Contacts Switch Model NO.: SR-M55A Certification: CE, ISO, RoHS Usage: Door, Fire, Window, Auto Application: Home, Communication Electronic Products, Industry, Special Equipment Type: Anti-Theft Alarm System: Access Control System Signal Transmission: Cable Color: White Certificate: Ce Approval Output: Nc or No Optional Name: Sumring China Manufacturer metal Door Sensor Alarm Trademark: SUMRING Transport Package: Carton Specification: Zinc-alloyed Origin: China HS Code: 8531901000 Product Description Sumring China Manufacturer metal Door Sensor Alarm Magnetic Contacts SwitchProduct description:Product size106 *38 *10mmCase MaterialAluminumSensing distance50-70 (mm)Installationburied or surface type, with 380MM stainless steel protection tubeConnection22 #wire, 550MMCurrent Voltage Power0.5A/100V/10WNoteNO -- normally open (path alarm)NO &NC -normally open normally closed (this note two, can provide)Package1 sets/bag,40 sets/cartonCarton size375*295*200mmMore info : https://www.firealarmfactory.com/door-contact/