AA BATTERY POWERED 12V DC MICRO SD, WEATHERPROOF 100M RANGE CODE HOPPING   – Wireless Code hopping – 1000 unique Pin code from 1-10 digit – Backing up the unit with a microSD card – Wrong code lock out function – Holiday mode – 9 Channel RF outputs – 1 Door bell RF output – Waterproof housing Sherlo-Wireless-Access-Control-Keypad-Sales-Leaflet