Discrete monitoring of opening and closure of doors and windows Up to 2-year battery life 200m range The Mini Door/Window Contact allows for discreet monitoring of the opening and closure of doors and windows, thanks to the revised sleek aesthetic. Easily pair with your Yale Sync Smart Home Alarm and mountable on any door or window frame, add an element of stealth to your home's security defences. Featuring a 200m wire-free range and a battery life of up to 2 years, the Mini Door/Window Contact sends low battery notifications and tamper alerts, with built in protection to prevent unauthorised removal. The device connects seamlessly with the Yale Sync eco-system, operating reliably off an 838 MHz private network, so if your internet drops, your devices remain active. This accessory is part of the Yale Sync Smart Home Range. The Sync Smart Home Alarm puts you firmly in control, giving you total peace of mind that your home is secure and protected.Unlike a traditional home alarm system, t