Smoke alarms or smoke is actually smoke alarms nicknames. Smoke alarm is by monitoring the concentration of smoke to implement fire prevention, internal use of ionization smoke sensors, ionization smoke sensor is an advanced technology, stable and reliable sensors are widely applied to various fire alarm systems, performance is far superior gas resistance class fire alarm. Fire Equipment Co., Ltd., Xi'an Runchi operation of various fire equipment, Xi'an delivery, specific price negotiable, one year free service! ! Address: Chang'an Road, Xi'an Chang'an One Building 1-508 grassy slopes Tel :029 -85352221 Website http://www.xarunchi.com