I have an Argus AAD which has worked well for a while, but once "sensor error" message kÃ¼ldte.A company replaced with great difficulty, I sent it does not work, the temperature measurement function. The email do not respond, not responding to anything. I do not trust the device, which is what it is malfunctioning. The company likes to take the money and then turn sight. Is not a reliable company! I would not recommend to anyone!