美国西艾瑞SMC（Sierra Monitor Corp）公司火气监测产品符合美国UL、FM和加拿大CSA标准。
5100 “IT” Series Smart Gas detectors（5100“IT”系列智能气体探测器）
5100-02IT可燃气体探测器
5100-XXIT有毒气体探测器
5100-28IT红外可燃气体探测器
4501-XX有毒气体探测器探头
Flame Detectors（火焰检测器）
Gas Monitors – Audible Alarms （气体监测器）
Quasar 900 Series Open Path Gas Detectors（900系列开路气体探测器）
Sentry IT Fire and Gas Detection Systems（IT系列火灾和气体检测系统）
Two Wire Loop-Powered Toxic Gas Detectors（双线回路式有毒气体探测器）
Gas Sensor Monitors Model 2001 – Combusitble Gas
Gas Sensor Monitors Model 2003 – Hydrogen Sulfide
Gas Sensor Monitors Model 2006 – Carbon Moxoxide
5100-02-IT可燃气探头采用稳定、可靠的催化燃烧技术检测各种可燃气体，如甲烷等。其量程为0～100%LEL，此探头维护简便，只需每半年校准一次。具备自检功能，可自动检查故障并报警。5100-02-IT可输出4～20mA信号，或与MODBUS RTU通讯。若要提高系统性能，探头可直接与Sentry主机连接，从而实现系统级MODBUS RTUQU串行通讯、区域报警管理、重多的诊断命令发挥作用、与LANServer相连、与多个传感器连接。
5100-02-IT-A1-01-0-0
5100-02-IT-A2-01-0-0
5100-02-IT-S1-01-0-0
5100-02-IT-S2-01-0-0
5100-02-IT-A1-02-0-0
5100-02-IT-A1-05-0-0
5100-02-IT-A1-05-1-0
5100-02-IT-A1-02-1-0
5100-02-IT-A1-02-1-1
5100-04-IT-A1-01-0-0
5100-03-IT-A1-01-0-0
5100-05-IT-A1-01-0-0-0
5100-06-IT-A1-01-0-0
5100-08-IT-A1-01-0-0
5100-10-IT-A1-01-0-0
5100-12-IT-A1-01-0-0
5100-21-IT-A1-01-0-0
5100-25-IT-A1-01-0-0
5100-26-IT-A1-01-0-0
5100-28-IT-A1-01-01-0-0-F
5100-88-IT-A1-01-0-0
SIERRA MONITOR 5200-02-IT-AL
5200-02-IT-SS
4501-03 O2
4501-04 CO
4501-05 H2S
4501-06 CI2
4501-08 CIO2
4501-10 S02
4501-12 NO2
4501-25 NH2
4501-26 HF
SIERRA MONITOR 5200-03-IT
SIERRA MONITOR 5200-04-IT
SIERRA MONITOR 5200-05-IT
SIERRA MONITOR 5200-06-IT
SIERRA MONITOR 5200-08-IT
SIERRA MONITOR 5200-10-IT
SIERRA MONITOR 5200-12-IT
SIERRA MONITOR 5200-21-IT
SIERRA MONITOR 5200-25-IT
SIERRA MONITOR 5200-26-IT
SIERRA MONITOR 5200-28-IT-AL
SIERRA MONITOR 5200-28-IT-SS
SIERRA MONITOR 5310-02
SIERRA MONITOR 5358-01
SIERRA MONITOR 5360-00
SIERRA MONITOR SPL21824
SIERRA MONITOR SPL21825
SIERRA MONITOR SPL21829
SIERRA MONITOR SPX27057
SIERRA MONITOR SPX27061