Placed on windows, front doors, patio doors, etc., Smartvest Pro wireless opening detectors reliably detect and report any unauthorised opening. For protection against burglary and theft; triggers an alarm and starts all individually configured scenarios in combination with the Smartvest Pro wireless alarm system. Optional convenience function, e.g. "if cellar door opened, then light on". In combination with the Smartvest Pro wireless socket and a standard standard lamp. Small and unobtrusive, consisting of two parts for window frame and frame or door frame and door leaf. Simple installation (with adhesive pad or screws, included in the scope of delivery). Easily replaceable battery included.