IR Wireless Motion Sensor Detector Alarm W/ 2 Remotes Detection distance: 10m / 30 feet;Detection angle: 110 degrees wide Turn on delay: 60 seconds;Alarm tone voltage: 105 dB Includes 2 remote controller keychains to easily engage or disengage alarm from a remote distance Batteries: 4 x AA for sensor / 3 x AG13 for each remote control (batteries not included) Supports 6V DC charger (charger not included)