Mini magnetic contact route I remove for doors or windows of ultra-thin size, less than 1 cm, for what it remains very discreet once installed. Maximum opening with the magnet 16 mm. Battery of lithium of long built-in duration. With tapes of double face of high adherence for a rapid installation supplied. Compatible with the whole series of recipients DSC 433 MHz. It works with a battery of lithium, type CR2032 of 3V, supplied. Duration of the battery 5 years. Dimensions 57 x 25 x 5,3 mm.