• Tamper-proof settings with passcode protection
• Continuous LCD shows real-time gas concentration
• Compact and lightweight design makes it comfortable to wear
• Water-resistant
• Simple automatic calibration procedure; compatible with BW MicroDock II automatic test and calibration station

Gas Alert Extreme	Ammonia NH3 GAXT-A-DL Ammonia NH3 extended range GAXT-A2-DL Carbon monoxide CO GAXT-M-DL Carbon monoxide, H2 resistant CO-H GAXT-M2-DL Chlorine Cl2 GAXT-C-DL Chlorine dioxide ClO2 GAXT-V-DL Ethylene oxide (ETO) C2H4O GAXT-E-DL Hydrogen cyanide HCN GAXT-Z-DL Hydrogen sulfide H2S GAXT-H-DL Hydrogen sulfide H2S extended range GAXT-H-2-DL Nitric oxide NO GAXT-N-DL Nitrogen dioxide NO2 GAXT-D-DL Oxygen O2 GAXT-X-DL-2* Ozone O3 GAXT-G-DL Phosphine PH3 GAXT-P-DL Sulfur dioxide SO2 GAXT-S-DL
Carrying & Protective Accessories and Spares	Concussion-proof boot with stainless steel alligator-style clip GA-BALERT Replacement breathing Tubes, kit of 200 for Breathing Adaptor (GA-BA-K1) GA-BT-K1 Splash guard filters for use with GA24-BALERT (kit of 5) GA-BSPLASH-K Hard hat clip (non-conductive) GA-HC-1 Belt clip with screw GA-CL-1 Neck strap with safety release GA-NS-1 Short strap (6 in./15.2 cm) GA-LY-1 Extension strap (4 ft./1.2 m) GA-ES-1 Chest harness GA-CH-2 Manual Aspirator Pump Kit GA Extreme, GA M5 GA-AS02 Test cap and hose GA-TC-1
Power Supply	Battery - lithium, 3V (Panasonic CR-2PE/BN) E2829
Datalogging Accessories	IR DataLink USB adaptor GA-USB2
Replacement Sensor Screens	Replacement sensor Screen Filters with gasket (kit of 10) GAXT-SS
Replacement Sensors	Replacement Ammonia NH3 sensor* SR-A04 Replacement Ammonia NH3 sensor, extended range* SR-A204 Replacement Carbon monoxide CO sensor SR-M04-SC Replacement Carbon monoxide CO-H sensor, H2 resistant PS-RM04H Replacement Chlorine Cl2 sensor* PS-RC10 Replacement Chlorine dioxide ClO2 sensor* SR-V04 Replacement Ethylene oxide (ETO) sensor* SR-E04 Replacement Hydrogen cyanide HCN sensor* PS-RZ10 Replacement Hydrogen sulfide H2S sensor PS-RH04S Replacement Nitric oxide NO sensor SR-N04 Replacement Nitrogen dioxide NO2 sensor PS-RD04 Replacement Oxygen O2 sensor SR-X2V Replacement Ozone O3 sensor* SR-G04 Replacement Phosphine PH3 sensor SR-P04 Replacement Sulfur dioxide SO2 sensor PS-RS04