Kelford Systems Ltd (trading as Kelford Cams) warrants that when our items are correctly mounted within their accurate software by a certified tradesperson, they will be free from defect in material and workmanship. Warranty are going to be void on all products that demonstrate proof of inappropriate software or installation, https://4age20vitbs72358.eedblog.com/32597361/an-unbiased-view-of-4age-20v-itbs