Using the MSA Altair 4XR Multigas Detector is easy. First, turn it on and let it warm up. It'll start monitoring the gas levels right away. Keep it in a place where gas might accumulate. When using it with the ALTAIR Connect app, make sure your device's Bluetooth is on and pair them. Remember to keep the detector away from extreme temperatures and humidity. For maintenance, clean the sensors regularly with a soft, dry cloth. Check the battery frequently and charge it when it's low. If you notice any issues, don't use it and contact the service team.