Each of my GPS equipped Escort Detectors (9500ix, MAX, MAX 360c) has been able to manually lock out fixed-location laser Band Alerts (such as speed cameras and some toll booths). However, none of these models have been able to retain their laser lockouts for any reliable length of time. A manual laser band Lockout might last a day or it might last a week or two. According to ER, laser does not drift with temperature changes like radar can, so drift should not be a cause. Also according to ER, manual laser lockouts can be removed by AutoUnlearn if they are not present at a locked out location (either moved or turned off) and the AutoUnlearn's algorithm unlearns it after so many passes with no signal. I pass some 24/7/365 (not moved or turned off) noisy Poliscan laser speed cameras on a daily basis which I manually lock out. The problem is that these laser band Lockouts (not talking about the accompanying GPS voice alerts) are not reliably retained and require a triple press of the Mute button to re-lock out every so often. Now I did send my MAX back to ER to have this specific issue addressed but they found no problem. However, on my end the issue was still presenting after its return. I'm wondering if the issue might somehow involve the extremely long "laser latch time" ER incorporates into its RDs (as opposed to radar latch time). What I mean by this is that when I lock out a radar source it's usually during the active radar signal I am receiving and is reflecting all over the place. With respect to laser, the hit may be so brief due to it's narrow beam(s) that when I execute the manual lockout with the triple-press of mute, the Display is still signaling Laser and the Lockout is shown as successful, but at that point the RD may no longer be truly receiving the laser's actual signal because the alert is merely "latched" by ER's software for maybe 5 to 10 seconds after the signal is lost. I have tossed this possibility out on the ERF but it never went anywhere. I was wondering if anyone here may have run into this or tested the manual laser lockout with the laser beam actively hitting the RD vs locking it out during the extended latch period where the actual signal is missing? I have not been able to pin-down this non-retention of manual laser lockouts issue which affects all the ER GPS models that I have owned.