Shenzhen Sumring is a Hi-tech enterprise specialized in the research & development of security and fire alarm products, it established in 2000, the factory covers 7000 square meter with 500 staff; The Products Line: Fire alarm control panel ( 4 zones, 8 zones, 16 zones); Smoke detectors: photoelectric smoke detector (2 wires, 3 wires or 4 wires); and inonization smoke detectors; Heat detector: 2 wires, 3 wires or 4 wires; Smoke & Heat combination detector; PIR detectors: wired wide angle PIR detector; wired curtain/identifying direction PIR detector; wireless PIR detector;wireless intelligent PIR detector etc. Gas detectors: LPG&Natrual detector, CO detectors, CO+LPG&Natrual combination detectors; 12V, 24V or 220V available; Accessory: manual call point, resettable manual call point, strobe siren, door contacts etc. all the above products are approved by CE and 70% are exported to middle east, south america, asia, europe. The Advantages of Sumring products: Reliable quality (because most of them are designed&produces with the standard of NEN-EN14604-2005/UL217-200); Powerful technical support and after-sale services; Short leadtime(Normally we have stock, the longest is within 10 days) Competitive price;