Anyone else have this model?
I am experiencing issues with very, very, very slow reaction/response time.
I also do not see how the optional pump can be utilized with this problem.
Co will continue to rise long after initial exposure.
Co takes an extremely long time to come back down to neutral levels after exposure.

This should be great trying to locate sources on a jobsite!
Maybe I can wait 45 minutes at each test area. Customer should be very happy about that!
Sure hope I got a defected unit!

sent from my Samsung Galaxy Note