Skylink KP-434W Wireless Remote Entry Exit Access Wall  Control Security Burglar Alarm Protection Keypad | Affordable Easy to Install DIY NO MONTHLY FEES and easy DIY (Do It Yourself) installation WIRELESS - BATTERY POWERED with low battery indication: be informed when the batterty gets low Can be installed up to 100 feet away in open area from the security control panel (easily arm/disarm your system when leaving or entering the premises) UP TO 4 DIFFERENT PASSCODES to set memorable passcodes for individual users LIFETIME SUPPORT - Toll free 1-800-304-1187, support@skylinkhome.com