Now supplied in a modern, lightweighy storage / presentaion box.* 3 Alarms with red, green and blue LED's* 6 screw in snag bars (3 short and 3 long)* Wireless range of up to 200m (dependant upon conditions) * Variable volume* Variable tone* Rolling Code System (prevents interference between sets)* WaterproofAlarms each take 1 x 12v 23AE MN21 LRV08 Battery (not included)Receiver takes 3 x AAA Batteries (not included)