SPY4 - Visonic SPY Infrared Motion Detector

The unit is a nice looking unit and will serve the architectural purpose for which it was intended.However, unfortunately on power up i experienced a 30% product failure rate therefore I can not rate this product highly.Let’s hope the installed and working units continue to work and that the supplier has a quality system and honors replacement of the faulty units supplied especially at the price charged per unit.Be mindfull of the additional 15-20% Customs charge you will be hit with when collecting the units from the Post Office if buying from the UK and having the units shipped. I was not expecting this especially with the fact that Amazon knew the units were being posted to the UK. Did I miss some small print in the Ts&Cs somewhere? I hope Amazon will fix this over charge.