DSC PG9945 Wireless PowerG Door/Window Contact with Auxiliary Input Add an extra layer of security to your house with these door and window contacts. These work in tandem with your home security system to ensure nobody gets into your houseSelectable operation of auxiliary input as NO, NC or EOL supervisionVisible link quality indicator shown on deviceCase and wall tamperAvailable in either white (PG9945) or brown (PG9945BR) to blend into any d?corUser-selectable operation of auxiliary input as NC or EOLProlonged battery life (8 years with typical use)Back tamper switch optionsDimensions: 81 x 32 x 25mm (3.19 x 1.25 x 1in)Certified with ULC Wireless Commercial Burglary Listing under ULC-S304-16 Standard - an industry first in Canada!**Only applicable in Canada