AJAX (5328.09.WH1) Wireless motion detector - Indoor Pet Immune - White Usage: Used for arming/disarming of Ajax security systems Buttons: 15x button Indoor Radio channel Wireless Touch keypad Communication range: Up to 1,700 m in an open space, Two-way communication between devices Security: Self-adjusting RF output power, Block encryption based on AES algorithm, Keypad scanning, Duress Code, User Passcode, Protection against passcode guessing, Anti-sabotage: Protection against fraud, Jamming detection, Tamper-resistant Size & Weight: 150 × 103 × 14 mm, 197g Battery: 4x 3V CR123A battery, Operates up to 2 years without replacement Warranty: 1 Year Official Warranty.