This device is for monitoring and communicating gas concentration levels for datacollection or record keeping and does not provide alarm signals. Misuse of this device may cause explosion and/or personal injury. Theseinstructions must be thoroughly read and understood prior to installation of thedevice. The end-user is responsible for maintaining the device in full, operational condition. Install the device where shock, vibration and temperature fluctuations are minimal.Do not mount in ambient temperatures that exceed the limits on the devicelabelling. The device must be mounted vertically with the sensor pointing downward. Avoid dropping the device, as loosening of the threaded flame-proof joints orpermanent damage may occur. When not in use, the device should be stored in a clean, dry area and within thetemperature range listed within the devices environmental specifications. The only field replaceable parts are the battery pack and FLEX sense sensor.Substitution of other components will invalidate third party issued approvalsand certifications, may impair suitability for Class 1, Div 1 location and void anywarrantiesWireless HARTGases Measured: CH4, H2S, CO,C3H8,NH35 Years battery life Hot swapping of sensors possible