LT5 buttons "A" and "D" are typically used for arming and disarming, then "G" or "E" buttons can be programmed for any task (ex. to control gates, to trigger a panic alarm).
Working distance: 1200m (in open space) Frequency hopping against jamming Battery type: 4 * AA batteries (batteries included, easy to replace) Battery life span: up to 2 years