The Honeywell DCP311 wireless push button combines great functionality with a best in class design. It comes with an LED confidence light which indicates that the push is working, and the Secret Knock function plays a different melody, so you know it’s a family member or friend at the door. FEATURES:• LED Confidence Light - peace of mind for visitors• Honeywell ActivLink™ technology provides a reliable wireless range of up to 200m• The Secret Knock function allows a different melody for friends and family• Add up to 6 Push Buttons to the Honeywell Doorbells (Series 9 only)• Easy to open battery compartment• Optional screw-free installation• IP55 Rated• Uses an innovative wireless protocol on the 868MHz frequency to provide greater range and reliability• Extended battery life of up to 2 years• Honeywell ActivLink™ interconnects your Doorbell with Honeywell security accessories and Home Alarm Kits• 2 Year product quality guarantee WHAT’S IN THE BOX:1 x Push Button1 x Push Mounting Plate1 x CR2032 (3V) Battery1 x Quick Start GuideFixings and Fittings